413960

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 950400

約数和(自身を除く): 536440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 131, 158, 262, 316, 395, 524, 632, 655, 790, 1048, 1310, 1580, 2620, 3160, 5240, 10349, 20698, 41396, 51745, 82792, 103490, 206980, 413960]

約数ペア:

[(1, 413960), (2, 206980), (4, 103490), (5, 82792), (8, 51745), (10, 41396), (20, 20698), (40, 10349), (79, 5240), (131, 3160), (158, 2620), (262, 1580), (316, 1310), (395, 1048), (524, 790), (632, 655)]