218335940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{253879}}^1$

素因数の和:253931

約数の個数: 24

約数和(自身を含む): 469170240

約数和(自身を除く): 250834300

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 253879, 507758, 1015516, 1269395, 2538790, 5077580, 10916797, 21833594, 43667188, 54583985, 109167970, 218335940]

約数ペア:

[(1, 218335940), (2, 109167970), (4, 54583985), (5, 43667188), (10, 21833594), (20, 10916797), (43, 5077580), (86, 2538790), (172, 1269395), (215, 1015516), (430, 507758), (860, 253879)]