21351200

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2053}}^1$

素因数の和:2086

約数の個数: 72

約数和(自身を含む): 56160468

約数和(自身を除く): 34809268

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 100, 104, 130, 160, 200, 208, 260, 325, 400, 416, 520, 650, 800, 1040, 1300, 2053, 2080, 2600, 4106, 5200, 8212, 10265, 10400, 16424, 20530, 26689, 32848, 41060, 51325, 53378, 65696, 82120, 102650, 106756, 133445, 164240, 205300, 213512, 266890, 328480, 410600, 427024, 533780, 667225, 821200, 854048, 1067560, 1334450, 1642400, 2135120, 2668900, 4270240, 5337800, 10675600, 21351200]

約数ペア:

[(1, 21351200), (2, 10675600), (4, 5337800), (5, 4270240), (8, 2668900), (10, 2135120), (13, 1642400), (16, 1334450), (20, 1067560), (25, 854048), (26, 821200), (32, 667225), (40, 533780), (50, 427024), (52, 410600), (65, 328480), (80, 266890), (100, 213512), (104, 205300), (130, 164240), (160, 133445), (200, 106756), (208, 102650), (260, 82120), (325, 65696), (400, 53378), (416, 51325), (520, 41060), (650, 32848), (800, 26689), (1040, 20530), (1300, 16424), (2053, 10400), (2080, 10265), (2600, 8212), (4106, 5200)]