72221020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{521}}^1$

素因数の和:798

約数の個数: 48

約数和(自身を含む): 157852800

約数和(自身を除く): 85631780

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 239, 290, 478, 521, 580, 956, 1042, 1195, 2084, 2390, 2605, 4780, 5210, 6931, 10420, 13862, 15109, 27724, 30218, 34655, 60436, 69310, 75545, 124519, 138620, 151090, 249038, 302180, 498076, 622595, 1245190, 2490380, 3611051, 7222102, 14444204, 18055255, 36110510, 72221020]

約数ペア:

[(1, 72221020), (2, 36110510), (4, 18055255), (5, 14444204), (10, 7222102), (20, 3611051), (29, 2490380), (58, 1245190), (116, 622595), (145, 498076), (239, 302180), (290, 249038), (478, 151090), (521, 138620), (580, 124519), (956, 75545), (1042, 69310), (1195, 60436), (2084, 34655), (2390, 30218), (2605, 27724), (4780, 15109), (5210, 13862), (6931, 10420)]