64331440

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18701}}^1$

素因数の和:18757

約数の個数: 40

約数和(自身を含む): 153057168

約数和(自身を除く): 88725728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 18701, 37402, 74804, 93505, 149608, 187010, 299216, 374020, 748040, 804143, 1496080, 1608286, 3216572, 4020715, 6433144, 8041430, 12866288, 16082860, 32165720, 64331440]

約数ペア:

[(1, 64331440), (2, 32165720), (4, 16082860), (5, 12866288), (8, 8041430), (10, 6433144), (16, 4020715), (20, 3216572), (40, 1608286), (43, 1496080), (80, 804143), (86, 748040), (172, 374020), (215, 299216), (344, 187010), (430, 149608), (688, 93505), (860, 74804), (1720, 37402), (3440, 18701)]