12540740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{179}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 27578880

約数和(自身を除く): 15038140

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 113, 124, 155, 179, 226, 310, 358, 452, 565, 620, 716, 895, 1130, 1790, 2260, 3503, 3580, 5549, 7006, 11098, 14012, 17515, 20227, 22196, 27745, 35030, 40454, 55490, 70060, 80908, 101135, 110980, 202270, 404540, 627037, 1254074, 2508148, 3135185, 6270370, 12540740]

約数ペア:

[(1, 12540740), (2, 6270370), (4, 3135185), (5, 2508148), (10, 1254074), (20, 627037), (31, 404540), (62, 202270), (113, 110980), (124, 101135), (155, 80908), (179, 70060), (226, 55490), (310, 40454), (358, 35030), (452, 27745), (565, 22196), (620, 20227), (716, 17515), (895, 14012), (1130, 11098), (1790, 7006), (2260, 5549), (3503, 3580)]