386140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:501

約数の個数: 24

約数和(自身を含む): 831600

約数和(自身を除く): 445460

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 449, 860, 898, 1796, 2245, 4490, 8980, 19307, 38614, 77228, 96535, 193070, 386140]

約数ペア:

[(1, 386140), (2, 193070), (4, 96535), (5, 77228), (10, 38614), (20, 19307), (43, 8980), (86, 4490), (172, 2245), (215, 1796), (430, 898), (449, 860)]