21494460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1621}}^1$

素因数の和:1663

約数の個数: 96

約数和(自身を含む): 68668992

約数和(自身を除く): 47174532

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 1621, 2210, 2652, 3242, 3315, 4420, 4863, 6484, 6630, 8105, 9726, 13260, 16210, 19452, 21073, 24315, 27557, 32420, 42146, 48630, 55114, 63219, 82671, 84292, 97260, 105365, 110228, 126438, 137785, 165342, 210730, 252876, 275570, 316095, 330684, 358241, 413355, 421460, 551140, 632190, 716482, 826710, 1074723, 1264380, 1432964, 1653420, 1791205, 2149446, 3582410, 4298892, 5373615, 7164820, 10747230, 21494460]

約数ペア:

[(1, 21494460), (2, 10747230), (3, 7164820), (4, 5373615), (5, 4298892), (6, 3582410), (10, 2149446), (12, 1791205), (13, 1653420), (15, 1432964), (17, 1264380), (20, 1074723), (26, 826710), (30, 716482), (34, 632190), (39, 551140), (51, 421460), (52, 413355), (60, 358241), (65, 330684), (68, 316095), (78, 275570), (85, 252876), (102, 210730), (130, 165342), (156, 137785), (170, 126438), (195, 110228), (204, 105365), (221, 97260), (255, 84292), (260, 82671), (340, 63219), (390, 55114), (442, 48630), (510, 42146), (663, 32420), (780, 27557), (884, 24315), (1020, 21073), (1105, 19452), (1326, 16210), (1621, 13260), (2210, 9726), (2652, 8105), (3242, 6630), (3315, 6484), (4420, 4863)]