213509780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13669}}^1$

素因数の和:13760

約数の個数: 48

約数和(自身を含む): 496056960

約数和(自身を除く): 282547180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3905, 7810, 13669, 15620, 27338, 54676, 68345, 136690, 150359, 273380, 300718, 601436, 751795, 970499, 1503590, 1940998, 3007180, 3881996, 4852495, 9704990, 10675489, 19409980, 21350978, 42701956, 53377445, 106754890, 213509780]

約数ペア:

[(1, 213509780), (2, 106754890), (4, 53377445), (5, 42701956), (10, 21350978), (11, 19409980), (20, 10675489), (22, 9704990), (44, 4852495), (55, 3881996), (71, 3007180), (110, 1940998), (142, 1503590), (220, 970499), (284, 751795), (355, 601436), (710, 300718), (781, 273380), (1420, 150359), (1562, 136690), (3124, 68345), (3905, 54676), (7810, 27338), (13669, 15620)]