20641380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{6491}}^1$

素因数の和:6556

約数の個数: 48

約数和(自身を含む): 58895424

約数和(自身を除く): 38254044

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 53, 60, 106, 159, 212, 265, 318, 530, 636, 795, 1060, 1590, 3180, 6491, 12982, 19473, 25964, 32455, 38946, 64910, 77892, 97365, 129820, 194730, 344023, 389460, 688046, 1032069, 1376092, 1720115, 2064138, 3440230, 4128276, 5160345, 6880460, 10320690, 20641380]

約数ペア:

[(1, 20641380), (2, 10320690), (3, 6880460), (4, 5160345), (5, 4128276), (6, 3440230), (10, 2064138), (12, 1720115), (15, 1376092), (20, 1032069), (30, 688046), (53, 389460), (60, 344023), (106, 194730), (159, 129820), (212, 97365), (265, 77892), (318, 64910), (530, 38946), (636, 32455), (795, 25964), (1060, 19473), (1590, 12982), (3180, 6491)]