64746460

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{21727}}^1$

素因数の和:21885

約数の個数: 24

約数和(自身を含む): 136886400

約数和(自身を除く): 72139940

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 21727, 43454, 86908, 108635, 217270, 434540, 3237323, 6474646, 12949292, 16186615, 32373230, 64746460]

約数ペア:

[(1, 64746460), (2, 32373230), (4, 16186615), (5, 12949292), (10, 6474646), (20, 3237323), (149, 434540), (298, 217270), (596, 108635), (745, 86908), (1490, 43454), (2980, 21727)]