21398580

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:85

約数の個数: 288

約数和(自身を含む): 83655936

約数和(自身を除く): 62257356

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 27, 28, 30, 34, 35, 36, 37, 42, 45, 51, 54, 60, 63, 68, 70, 74, 81, 84, 85, 90, 102, 105, 108, 111, 119, 126, 135, 140, 148, 153, 162, 170, 180, 185, 189, 204, 210, 222, 238, 243, 252, 255, 259, 270, 306, 315, 324, 333, 340, 357, 370, 378, 405, 420, 444, 459, 476, 486, 510, 518, 540, 555, 567, 595, 612, 629, 630, 666, 714, 740, 756, 765, 777, 810, 918, 945, 972, 999, 1020, 1036, 1071, 1110, 1134, 1190, 1215, 1258, 1260, 1295, 1332, 1377, 1428, 1530, 1554, 1620, 1665, 1701, 1785, 1836, 1887, 1890, 1998, 2142, 2220, 2268, 2295, 2331, 2380, 2430, 2516, 2590, 2754, 2835, 2997, 3060, 3108, 3145, 3213, 3330, 3402, 3570, 3774, 3780, 3885, 3996, 4131, 4284, 4403, 4590, 4662, 4860, 4995, 5180, 5355, 5508, 5661, 5670, 5994, 6290, 6426, 6660, 6804, 6885, 6993, 7140, 7548, 7770, 8262, 8505, 8806, 8991, 9180, 9324, 9435, 9639, 9990, 10710, 11322, 11340, 11655, 11988, 12580, 12852, 13209, 13770, 13986, 14985, 15540, 16065, 16524, 16983, 17010, 17612, 17982, 18870, 19278, 19980, 20655, 20979, 21420, 22015, 22644, 23310, 26418, 27540, 27972, 28305, 28917, 29970, 32130, 33966, 34020, 34965, 35964, 37740, 38556, 39627, 41310, 41958, 44030, 44955, 46620, 48195, 50949, 52836, 56610, 57834, 59940, 62937, 64260, 66045, 67932, 69930, 79254, 82620, 83916, 84915, 88060, 89910, 96390, 101898, 104895, 113220, 115668, 118881, 125874, 132090, 139860, 144585, 152847, 158508, 169830, 179820, 192780, 198135, 203796, 209790, 237762, 251748, 254745, 264180, 289170, 305694, 314685, 339660, 356643, 396270, 419580, 475524, 509490, 578340, 594405, 611388, 629370, 713286, 764235, 792540, 1018980, 1069929, 1188810, 1258740, 1426572, 1528470, 1783215, 2139858, 2377620, 3056940, 3566430, 4279716, 5349645, 7132860, 10699290, 21398580]

約数ペア:

[(1, 21398580), (2, 10699290), (3, 7132860), (4, 5349645), (5, 4279716), (6, 3566430), (7, 3056940), (9, 2377620), (10, 2139858), (12, 1783215), (14, 1528470), (15, 1426572), (17, 1258740), (18, 1188810), (20, 1069929), (21, 1018980), (27, 792540), (28, 764235), (30, 713286), (34, 629370), (35, 611388), (36, 594405), (37, 578340), (42, 509490), (45, 475524), (51, 419580), (54, 396270), (60, 356643), (63, 339660), (68, 314685), (70, 305694), (74, 289170), (81, 264180), (84, 254745), (85, 251748), (90, 237762), (102, 209790), (105, 203796), (108, 198135), (111, 192780), (119, 179820), (126, 169830), (135, 158508), (140, 152847), (148, 144585), (153, 139860), (162, 132090), (170, 125874), (180, 118881), (185, 115668), (189, 113220), (204, 104895), (210, 101898), (222, 96390), (238, 89910), (243, 88060), (252, 84915), (255, 83916), (259, 82620), (270, 79254), (306, 69930), (315, 67932), (324, 66045), (333, 64260), (340, 62937), (357, 59940), (370, 57834), (378, 56610), (405, 52836), (420, 50949), (444, 48195), (459, 46620), (476, 44955), (486, 44030), (510, 41958), (518, 41310), (540, 39627), (555, 38556), (567, 37740), (595, 35964), (612, 34965), (629, 34020), (630, 33966), (666, 32130), (714, 29970), (740, 28917), (756, 28305), (765, 27972), (777, 27540), (810, 26418), (918, 23310), (945, 22644), (972, 22015), (999, 21420), (1020, 20979), (1036, 20655), (1071, 19980), (1110, 19278), (1134, 18870), (1190, 17982), (1215, 17612), (1258, 17010), (1260, 16983), (1295, 16524), (1332, 16065), (1377, 15540), (1428, 14985), (1530, 13986), (1554, 13770), (1620, 13209), (1665, 12852), (1701, 12580), (1785, 11988), (1836, 11655), (1887, 11340), (1890, 11322), (1998, 10710), (2142, 9990), (2220, 9639), (2268, 9435), (2295, 9324), (2331, 9180), (2380, 8991), (2430, 8806), (2516, 8505), (2590, 8262), (2754, 7770), (2835, 7548), (2997, 7140), (3060, 6993), (3108, 6885), (3145, 6804), (3213, 6660), (3330, 6426), (3402, 6290), (3570, 5994), (3774, 5670), (3780, 5661), (3885, 5508), (3996, 5355), (4131, 5180), (4284, 4995), (4403, 4860), (4590, 4662)]