20406776

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{821}}^1$

素因数の和:1079

約数の個数: 32

約数和(自身を含む): 41428800

約数和(自身を除く): 21022024

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 239, 478, 821, 956, 1642, 1912, 3107, 3284, 6214, 6568, 10673, 12428, 21346, 24856, 42692, 85384, 196219, 392438, 784876, 1569752, 2550847, 5101694, 10203388, 20406776]

約数ペア:

[(1, 20406776), (2, 10203388), (4, 5101694), (8, 2550847), (13, 1569752), (26, 784876), (52, 392438), (104, 196219), (239, 85384), (478, 42692), (821, 24856), (956, 21346), (1642, 12428), (1912, 10673), (3107, 6568), (3284, 6214)]