81221764

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{5939}}^1$

素因数の和:6219

約数の個数: 24

約数和(自身を含む): 153679680

約数和(自身を除く): 72457916

約数列:

[1, 2, 4, 13, 26, 52, 263, 526, 1052, 3419, 5939, 6838, 11878, 13676, 23756, 77207, 154414, 308828, 1561957, 3123914, 6247828, 20305441, 40610882, 81221764]

約数ペア:

[(1, 81221764), (2, 40610882), (4, 20305441), (13, 6247828), (26, 3123914), (52, 1561957), (263, 308828), (526, 154414), (1052, 77207), (3419, 23756), (5939, 13676), (6838, 11878)]