20454200

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7867}}^1$

素因数の和:7896

約数の個数: 48

約数和(自身を含む): 51220680

約数和(自身を除く): 30766480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 7867, 15734, 31468, 39335, 62936, 78670, 102271, 157340, 196675, 204542, 314680, 393350, 409084, 511355, 786700, 818168, 1022710, 1573400, 2045420, 2556775, 4090840, 5113550, 10227100, 20454200]

約数ペア:

[(1, 20454200), (2, 10227100), (4, 5113550), (5, 4090840), (8, 2556775), (10, 2045420), (13, 1573400), (20, 1022710), (25, 818168), (26, 786700), (40, 511355), (50, 409084), (52, 393350), (65, 314680), (100, 204542), (104, 196675), (130, 157340), (200, 102271), (260, 78670), (325, 62936), (520, 39335), (650, 31468), (1300, 15734), (2600, 7867)]