164809640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{132911}}^1$

素因数の和:132953

約数の個数: 32

約数和(自身を含む): 382786560

約数和(自身を除く): 217976920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 132911, 265822, 531644, 664555, 1063288, 1329110, 2658220, 4120241, 5316440, 8240482, 16480964, 20601205, 32961928, 41202410, 82404820, 164809640]

約数ペア:

[(1, 164809640), (2, 82404820), (4, 41202410), (5, 32961928), (8, 20601205), (10, 16480964), (20, 8240482), (31, 5316440), (40, 4120241), (62, 2658220), (124, 1329110), (155, 1063288), (248, 664555), (310, 531644), (620, 265822), (1240, 132911)]