68617820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{317}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 147450240

約数和(自身を除く): 78832420

約数列:

[1, 2, 4, 5, 10, 20, 79, 137, 158, 274, 316, 317, 395, 548, 634, 685, 790, 1268, 1370, 1580, 1585, 2740, 3170, 6340, 10823, 21646, 25043, 43292, 43429, 50086, 54115, 86858, 100172, 108230, 125215, 173716, 216460, 217145, 250430, 434290, 500860, 868580, 3430891, 6861782, 13723564, 17154455, 34308910, 68617820]

約数ペア:

[(1, 68617820), (2, 34308910), (4, 17154455), (5, 13723564), (10, 6861782), (20, 3430891), (79, 868580), (137, 500860), (158, 434290), (274, 250430), (316, 217145), (317, 216460), (395, 173716), (548, 125215), (634, 108230), (685, 100172), (790, 86858), (1268, 54115), (1370, 50086), (1580, 43429), (1585, 43292), (2740, 25043), (3170, 21646), (6340, 10823)]