164871640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{132961}}^1$

素因数の和:133003

約数の個数: 32

約数和(自身を含む): 382930560

約数和(自身を除く): 218058920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 132961, 265922, 531844, 664805, 1063688, 1329610, 2659220, 4121791, 5318440, 8243582, 16487164, 20608955, 32974328, 41217910, 82435820, 164871640]

約数ペア:

[(1, 164871640), (2, 82435820), (4, 41217910), (5, 32974328), (8, 20608955), (10, 16487164), (20, 8243582), (31, 5318440), (40, 4121791), (62, 2659220), (124, 1329610), (155, 1063688), (248, 664805), (310, 531844), (620, 265922), (1240, 132961)]