20338750

素因数分解:

$2^1\times 5^4\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:382

約数の個数: 40

約数和(自身を含む): 38968776

約数和(自身を除く): 18630026

約数列:

[1, 2, 5, 10, 25, 50, 53, 106, 125, 250, 265, 307, 530, 614, 625, 1250, 1325, 1535, 2650, 3070, 6625, 7675, 13250, 15350, 16271, 32542, 33125, 38375, 66250, 76750, 81355, 162710, 191875, 383750, 406775, 813550, 2033875, 4067750, 10169375, 20338750]

約数ペア:

[(1, 20338750), (2, 10169375), (5, 4067750), (10, 2033875), (25, 813550), (50, 406775), (53, 383750), (106, 191875), (125, 162710), (250, 81355), (265, 76750), (307, 66250), (530, 38375), (614, 33125), (625, 32542), (1250, 16271), (1325, 15350), (1535, 13250), (2650, 7675), (3070, 6625)]