20276464

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1373}}^1$

素因数の和:1465

約数の個数: 40

約数和(自身を含む): 42934752

約数和(自身を除く): 22658288

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 142, 208, 284, 568, 923, 1136, 1373, 1846, 2746, 3692, 5492, 7384, 10984, 14768, 17849, 21968, 35698, 71396, 97483, 142792, 194966, 285584, 389932, 779864, 1267279, 1559728, 2534558, 5069116, 10138232, 20276464]

約数ペア:

[(1, 20276464), (2, 10138232), (4, 5069116), (8, 2534558), (13, 1559728), (16, 1267279), (26, 779864), (52, 389932), (71, 285584), (104, 194966), (142, 142792), (208, 97483), (284, 71396), (568, 35698), (923, 21968), (1136, 17849), (1373, 14768), (1846, 10984), (2746, 7384), (3692, 5492)]