21053520

素因数分解:

$2^4\times 3^6\times 5^1\times {\mathrm{19}}^2$

素因数の和:69

約数の個数: 210

約数和(自身を含む): 77456538

約数和(自身を除く): 56403018

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 81, 90, 95, 108, 114, 120, 135, 144, 152, 162, 171, 180, 190, 216, 228, 240, 243, 270, 285, 304, 324, 342, 360, 361, 380, 405, 432, 456, 486, 513, 540, 570, 648, 684, 720, 722, 729, 760, 810, 855, 912, 972, 1026, 1080, 1083, 1140, 1215, 1296, 1368, 1444, 1458, 1520, 1539, 1620, 1710, 1805, 1944, 2052, 2160, 2166, 2280, 2430, 2565, 2736, 2888, 2916, 3078, 3240, 3249, 3420, 3610, 3645, 3888, 4104, 4332, 4560, 4617, 4860, 5130, 5415, 5776, 5832, 6156, 6480, 6498, 6840, 7220, 7290, 7695, 8208, 8664, 9234, 9720, 9747, 10260, 10830, 11664, 12312, 12996, 13680, 13851, 14440, 14580, 15390, 16245, 17328, 18468, 19440, 19494, 20520, 21660, 23085, 24624, 25992, 27702, 28880, 29160, 29241, 30780, 32490, 36936, 38988, 41040, 43320, 46170, 48735, 51984, 55404, 58320, 58482, 61560, 64980, 69255, 73872, 77976, 86640, 87723, 92340, 97470, 110808, 116964, 123120, 129960, 138510, 146205, 155952, 175446, 184680, 194940, 221616, 233928, 259920, 263169, 277020, 292410, 350892, 369360, 389880, 438615, 467856, 526338, 554040, 584820, 701784, 779760, 877230, 1052676, 1108080, 1169640, 1315845, 1403568, 1754460, 2105352, 2339280, 2631690, 3508920, 4210704, 5263380, 7017840, 10526760, 21053520]

約数ペア:

[(1, 21053520), (2, 10526760), (3, 7017840), (4, 5263380), (5, 4210704), (6, 3508920), (8, 2631690), (9, 2339280), (10, 2105352), (12, 1754460), (15, 1403568), (16, 1315845), (18, 1169640), (19, 1108080), (20, 1052676), (24, 877230), (27, 779760), (30, 701784), (36, 584820), (38, 554040), (40, 526338), (45, 467856), (48, 438615), (54, 389880), (57, 369360), (60, 350892), (72, 292410), (76, 277020), (80, 263169), (81, 259920), (90, 233928), (95, 221616), (108, 194940), (114, 184680), (120, 175446), (135, 155952), (144, 146205), (152, 138510), (162, 129960), (171, 123120), (180, 116964), (190, 110808), (216, 97470), (228, 92340), (240, 87723), (243, 86640), (270, 77976), (285, 73872), (304, 69255), (324, 64980), (342, 61560), (360, 58482), (361, 58320), (380, 55404), (405, 51984), (432, 48735), (456, 46170), (486, 43320), (513, 41040), (540, 38988), (570, 36936), (648, 32490), (684, 30780), (720, 29241), (722, 29160), (729, 28880), (760, 27702), (810, 25992), (855, 24624), (912, 23085), (972, 21660), (1026, 20520), (1080, 19494), (1083, 19440), (1140, 18468), (1215, 17328), (1296, 16245), (1368, 15390), (1444, 14580), (1458, 14440), (1520, 13851), (1539, 13680), (1620, 12996), (1710, 12312), (1805, 11664), (1944, 10830), (2052, 10260), (2160, 9747), (2166, 9720), (2280, 9234), (2430, 8664), (2565, 8208), (2736, 7695), (2888, 7290), (2916, 7220), (3078, 6840), (3240, 6498), (3249, 6480), (3420, 6156), (3610, 5832), (3645, 5776), (3888, 5415), (4104, 5130), (4332, 4860), (4560, 4617)]