394160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{379}}^1$

素因数の和:405

約数の個数: 40

約数和(自身を含む): 989520

約数和(自身を除く): 595360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 379, 520, 758, 1040, 1516, 1895, 3032, 3790, 4927, 6064, 7580, 9854, 15160, 19708, 24635, 30320, 39416, 49270, 78832, 98540, 197080, 394160]

約数ペア:

[(1, 394160), (2, 197080), (4, 98540), (5, 78832), (8, 49270), (10, 39416), (13, 30320), (16, 24635), (20, 19708), (26, 15160), (40, 9854), (52, 7580), (65, 6064), (80, 4927), (104, 3790), (130, 3032), (208, 1895), (260, 1516), (379, 1040), (520, 758)]