28165455

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 53637120

約数和(自身を除く): 25471665

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 47, 69, 115, 135, 141, 193, 207, 235, 345, 423, 579, 621, 705, 965, 1035, 1081, 1269, 1737, 2115, 2895, 3105, 3243, 4439, 5211, 5405, 6345, 8685, 9071, 9729, 13317, 16215, 22195, 26055, 27213, 29187, 39951, 45355, 48645, 66585, 81639, 119853, 136065, 145935, 199755, 208633, 244917, 408195, 599265, 625899, 1043165, 1224585, 1877697, 3129495, 5633091, 9388485, 28165455]

約数ペア:

[(1, 28165455), (3, 9388485), (5, 5633091), (9, 3129495), (15, 1877697), (23, 1224585), (27, 1043165), (45, 625899), (47, 599265), (69, 408195), (115, 244917), (135, 208633), (141, 199755), (193, 145935), (207, 136065), (235, 119853), (345, 81639), (423, 66585), (579, 48645), (621, 45355), (705, 39951), (965, 29187), (1035, 27213), (1081, 26055), (1269, 22195), (1737, 16215), (2115, 13317), (2895, 9729), (3105, 9071), (3243, 8685), (4439, 6345), (5211, 5405)]