19860120

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:135

約数の個数: 256

約数和(自身を含む): 78796800

約数和(自身を除く): 58936680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 37, 40, 42, 45, 54, 56, 60, 63, 70, 71, 72, 74, 84, 90, 105, 108, 111, 120, 126, 135, 140, 142, 148, 168, 180, 185, 189, 210, 213, 216, 222, 252, 259, 270, 280, 284, 296, 315, 333, 355, 360, 370, 378, 420, 426, 444, 497, 504, 518, 540, 555, 568, 630, 639, 666, 710, 740, 756, 777, 840, 852, 888, 945, 994, 999, 1036, 1065, 1080, 1110, 1260, 1278, 1295, 1332, 1420, 1480, 1491, 1512, 1554, 1665, 1704, 1890, 1917, 1988, 1998, 2072, 2130, 2220, 2331, 2485, 2520, 2556, 2590, 2627, 2664, 2840, 2982, 3108, 3195, 3330, 3780, 3834, 3885, 3976, 3996, 4260, 4440, 4473, 4662, 4970, 4995, 5112, 5180, 5254, 5964, 6216, 6390, 6660, 6993, 7455, 7560, 7668, 7770, 7881, 7992, 8520, 8946, 9324, 9585, 9940, 9990, 10360, 10508, 11655, 11928, 12780, 13135, 13320, 13419, 13986, 14910, 15336, 15540, 15762, 17892, 18389, 18648, 19170, 19880, 19980, 21016, 22365, 23310, 23643, 25560, 26270, 26838, 27972, 29820, 31080, 31524, 34965, 35784, 36778, 38340, 39405, 39960, 44730, 46620, 47286, 52540, 53676, 55167, 55944, 59640, 63048, 67095, 69930, 70929, 73556, 76680, 78810, 89460, 91945, 93240, 94572, 105080, 107352, 110334, 118215, 134190, 139860, 141858, 147112, 157620, 165501, 178920, 183890, 189144, 220668, 236430, 268380, 275835, 279720, 283716, 315240, 331002, 354645, 367780, 441336, 472860, 496503, 536760, 551670, 567432, 662004, 709290, 735560, 827505, 945720, 993006, 1103340, 1324008, 1418580, 1655010, 1986012, 2206680, 2482515, 2837160, 3310020, 3972024, 4965030, 6620040, 9930060, 19860120]

約数ペア:

[(1, 19860120), (2, 9930060), (3, 6620040), (4, 4965030), (5, 3972024), (6, 3310020), (7, 2837160), (8, 2482515), (9, 2206680), (10, 1986012), (12, 1655010), (14, 1418580), (15, 1324008), (18, 1103340), (20, 993006), (21, 945720), (24, 827505), (27, 735560), (28, 709290), (30, 662004), (35, 567432), (36, 551670), (37, 536760), (40, 496503), (42, 472860), (45, 441336), (54, 367780), (56, 354645), (60, 331002), (63, 315240), (70, 283716), (71, 279720), (72, 275835), (74, 268380), (84, 236430), (90, 220668), (105, 189144), (108, 183890), (111, 178920), (120, 165501), (126, 157620), (135, 147112), (140, 141858), (142, 139860), (148, 134190), (168, 118215), (180, 110334), (185, 107352), (189, 105080), (210, 94572), (213, 93240), (216, 91945), (222, 89460), (252, 78810), (259, 76680), (270, 73556), (280, 70929), (284, 69930), (296, 67095), (315, 63048), (333, 59640), (355, 55944), (360, 55167), (370, 53676), (378, 52540), (420, 47286), (426, 46620), (444, 44730), (497, 39960), (504, 39405), (518, 38340), (540, 36778), (555, 35784), (568, 34965), (630, 31524), (639, 31080), (666, 29820), (710, 27972), (740, 26838), (756, 26270), (777, 25560), (840, 23643), (852, 23310), (888, 22365), (945, 21016), (994, 19980), (999, 19880), (1036, 19170), (1065, 18648), (1080, 18389), (1110, 17892), (1260, 15762), (1278, 15540), (1295, 15336), (1332, 14910), (1420, 13986), (1480, 13419), (1491, 13320), (1512, 13135), (1554, 12780), (1665, 11928), (1704, 11655), (1890, 10508), (1917, 10360), (1988, 9990), (1998, 9940), (2072, 9585), (2130, 9324), (2220, 8946), (2331, 8520), (2485, 7992), (2520, 7881), (2556, 7770), (2590, 7668), (2627, 7560), (2664, 7455), (2840, 6993), (2982, 6660), (3108, 6390), (3195, 6216), (3330, 5964), (3780, 5254), (3834, 5180), (3885, 5112), (3976, 4995), (3996, 4970), (4260, 4662), (4440, 4473)]