12640550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19447}}^1$

素因数の和:19472

約数の個数: 24

約数和(自身を含む): 25321296

約数和(自身を除く): 12680746

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 19447, 38894, 97235, 194470, 252811, 486175, 505622, 972350, 1264055, 2528110, 6320275, 12640550]

約数ペア:

[(1, 12640550), (2, 6320275), (5, 2528110), (10, 1264055), (13, 972350), (25, 505622), (26, 486175), (50, 252811), (65, 194470), (130, 97235), (325, 38894), (650, 19447)]