28565680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{227}}^1$

素因数の和:275

約数の個数: 120

約数和(自身を含む): 78963696

約数和(自身を除く): 50398016

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 121, 130, 143, 176, 208, 220, 227, 242, 260, 286, 440, 454, 484, 520, 572, 605, 715, 880, 908, 968, 1040, 1135, 1144, 1210, 1430, 1573, 1816, 1936, 2270, 2288, 2420, 2497, 2860, 2951, 3146, 3632, 4540, 4840, 4994, 5720, 5902, 6292, 7865, 9080, 9680, 9988, 11440, 11804, 12485, 12584, 14755, 15730, 18160, 19976, 23608, 24970, 25168, 27467, 29510, 31460, 32461, 39952, 47216, 49940, 54934, 59020, 62920, 64922, 99880, 109868, 118040, 125840, 129844, 137335, 162305, 199760, 219736, 236080, 259688, 274670, 324610, 357071, 439472, 519376, 549340, 649220, 714142, 1098680, 1298440, 1428284, 1785355, 2197360, 2596880, 2856568, 3570710, 5713136, 7141420, 14282840, 28565680]

約数ペア:

[(1, 28565680), (2, 14282840), (4, 7141420), (5, 5713136), (8, 3570710), (10, 2856568), (11, 2596880), (13, 2197360), (16, 1785355), (20, 1428284), (22, 1298440), (26, 1098680), (40, 714142), (44, 649220), (52, 549340), (55, 519376), (65, 439472), (80, 357071), (88, 324610), (104, 274670), (110, 259688), (121, 236080), (130, 219736), (143, 199760), (176, 162305), (208, 137335), (220, 129844), (227, 125840), (242, 118040), (260, 109868), (286, 99880), (440, 64922), (454, 62920), (484, 59020), (520, 54934), (572, 49940), (605, 47216), (715, 39952), (880, 32461), (908, 31460), (968, 29510), (1040, 27467), (1135, 25168), (1144, 24970), (1210, 23608), (1430, 19976), (1573, 18160), (1816, 15730), (1936, 14755), (2270, 12584), (2288, 12485), (2420, 11804), (2497, 11440), (2860, 9988), (2951, 9680), (3146, 9080), (3632, 7865), (4540, 6292), (4840, 5902), (4994, 5720)]