20926256

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:214

約数の個数: 60

約数和(自身を含む): 44930160

約数和(自身を除く): 24003904

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 109, 142, 169, 208, 218, 284, 338, 436, 568, 676, 872, 923, 1136, 1352, 1417, 1744, 1846, 2704, 2834, 3692, 5668, 7384, 7739, 11336, 11999, 14768, 15478, 18421, 22672, 23998, 30956, 36842, 47996, 61912, 73684, 95992, 100607, 123824, 147368, 191984, 201214, 294736, 402428, 804856, 1307891, 1609712, 2615782, 5231564, 10463128, 20926256]

約数ペア:

[(1, 20926256), (2, 10463128), (4, 5231564), (8, 2615782), (13, 1609712), (16, 1307891), (26, 804856), (52, 402428), (71, 294736), (104, 201214), (109, 191984), (142, 147368), (169, 123824), (208, 100607), (218, 95992), (284, 73684), (338, 61912), (436, 47996), (568, 36842), (676, 30956), (872, 23998), (923, 22672), (1136, 18421), (1352, 15478), (1417, 14768), (1744, 11999), (1846, 11336), (2704, 7739), (2834, 7384), (3692, 5668)]