20400548

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{233}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 22056412

約数列:

[1, 2, 4, 7, 14, 28, 53, 59, 106, 118, 212, 233, 236, 371, 413, 466, 742, 826, 932, 1484, 1631, 1652, 3127, 3262, 6254, 6524, 12349, 12508, 13747, 21889, 24698, 27494, 43778, 49396, 54988, 86443, 87556, 96229, 172886, 192458, 345772, 384916, 728591, 1457182, 2914364, 5100137, 10200274, 20400548]

約数ペア:

[(1, 20400548), (2, 10200274), (4, 5100137), (7, 2914364), (14, 1457182), (28, 728591), (53, 384916), (59, 345772), (106, 192458), (118, 172886), (212, 96229), (233, 87556), (236, 86443), (371, 54988), (413, 49396), (466, 43778), (742, 27494), (826, 24698), (932, 21889), (1484, 13747), (1631, 12508), (1652, 12349), (3127, 6524), (3262, 6254)]