28659280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1621}}^1$

素因数の和:1664

約数の個数: 80

約数和(自身を含む): 76026384

約数和(自身を除く): 47367104

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1360, 1621, 1768, 2210, 3242, 3536, 4420, 6484, 8105, 8840, 12968, 16210, 17680, 21073, 25936, 27557, 32420, 42146, 55114, 64840, 84292, 105365, 110228, 129680, 137785, 168584, 210730, 220456, 275570, 337168, 358241, 421460, 440912, 551140, 716482, 842920, 1102280, 1432964, 1685840, 1791205, 2204560, 2865928, 3582410, 5731856, 7164820, 14329640, 28659280]

約数ペア:

[(1, 28659280), (2, 14329640), (4, 7164820), (5, 5731856), (8, 3582410), (10, 2865928), (13, 2204560), (16, 1791205), (17, 1685840), (20, 1432964), (26, 1102280), (34, 842920), (40, 716482), (52, 551140), (65, 440912), (68, 421460), (80, 358241), (85, 337168), (104, 275570), (130, 220456), (136, 210730), (170, 168584), (208, 137785), (221, 129680), (260, 110228), (272, 105365), (340, 84292), (442, 64840), (520, 55114), (680, 42146), (884, 32420), (1040, 27557), (1105, 25936), (1360, 21073), (1621, 17680), (1768, 16210), (2210, 12968), (3242, 8840), (3536, 8105), (4420, 6484)]