81901988

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7481}}^1$

素因数の和:7532

約数の個数: 48

約数和(自身を含む): 181004544

約数和(自身を除く): 99102556

約数列:

[1, 2, 4, 7, 14, 17, 23, 28, 34, 46, 68, 92, 119, 161, 238, 322, 391, 476, 644, 782, 1564, 2737, 5474, 7481, 10948, 14962, 29924, 52367, 104734, 127177, 172063, 209468, 254354, 344126, 508708, 688252, 890239, 1204441, 1780478, 2408882, 2925071, 3560956, 4817764, 5850142, 11700284, 20475497, 40950994, 81901988]

約数ペア:

[(1, 81901988), (2, 40950994), (4, 20475497), (7, 11700284), (14, 5850142), (17, 4817764), (23, 3560956), (28, 2925071), (34, 2408882), (46, 1780478), (68, 1204441), (92, 890239), (119, 688252), (161, 508708), (238, 344126), (322, 254354), (391, 209468), (476, 172063), (644, 127177), (782, 104734), (1564, 52367), (2737, 29924), (5474, 14962), (7481, 10948)]