71878180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{3671}}^1$

素因数の和:3780

約数の個数: 48

約数和(自身を含む): 166561920

約数和(自身を除く): 94683740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3671, 3916, 4895, 7342, 9790, 14684, 18355, 19580, 36710, 40381, 73420, 80762, 161524, 201905, 326719, 403810, 653438, 807620, 1306876, 1633595, 3267190, 3593909, 6534380, 7187818, 14375636, 17969545, 35939090, 71878180]

約数ペア:

[(1, 71878180), (2, 35939090), (4, 17969545), (5, 14375636), (10, 7187818), (11, 6534380), (20, 3593909), (22, 3267190), (44, 1633595), (55, 1306876), (89, 807620), (110, 653438), (178, 403810), (220, 326719), (356, 201905), (445, 161524), (890, 80762), (979, 73420), (1780, 40381), (1958, 36710), (3671, 19580), (3916, 18355), (4895, 14684), (7342, 9790)]