85670980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{138179}}^1$

素因数の和:138219

約数の個数: 24

約数和(自身を含む): 185713920

約数和(自身を除く): 100042940

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 138179, 276358, 552716, 690895, 1381790, 2763580, 4283549, 8567098, 17134196, 21417745, 42835490, 85670980]

約数ペア:

[(1, 85670980), (2, 42835490), (4, 21417745), (5, 17134196), (10, 8567098), (20, 4283549), (31, 2763580), (62, 1381790), (124, 690895), (155, 552716), (310, 276358), (620, 138179)]