81012540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{192887}}^1$

素因数の和:192906

約数の個数: 48

約数和(自身を含む): 259241472

約数和(自身を除く): 178228932

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 192887, 385774, 578661, 771548, 964435, 1157322, 1350209, 1928870, 2314644, 2700418, 2893305, 3857740, 4050627, 5400836, 5786610, 6751045, 8101254, 11573220, 13502090, 16202508, 20253135, 27004180, 40506270, 81012540]

約数ペア:

[(1, 81012540), (2, 40506270), (3, 27004180), (4, 20253135), (5, 16202508), (6, 13502090), (7, 11573220), (10, 8101254), (12, 6751045), (14, 5786610), (15, 5400836), (20, 4050627), (21, 3857740), (28, 2893305), (30, 2700418), (35, 2314644), (42, 1928870), (60, 1350209), (70, 1157322), (84, 964435), (105, 771548), (140, 578661), (210, 385774), (420, 192887)]