71387480

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{10949}}^1$

素因数の和:11123

約数の個数: 32

約数和(自身を含む): 161622000

約数和(自身を除く): 90234520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 10949, 21898, 43796, 54745, 87592, 109490, 218980, 437960, 1784687, 3569374, 7138748, 8923435, 14277496, 17846870, 35693740, 71387480]

約数ペア:

[(1, 71387480), (2, 35693740), (4, 17846870), (5, 14277496), (8, 8923435), (10, 7138748), (20, 3569374), (40, 1784687), (163, 437960), (326, 218980), (652, 109490), (815, 87592), (1304, 54745), (1630, 43796), (3260, 21898), (6520, 10949)]