21386872

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{8941}}^1$

素因数の和:8983

約数の個数: 32

約数和(自身を含む): 45067680

約数和(自身を除く): 23680808

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 184, 299, 598, 1196, 2392, 8941, 17882, 35764, 71528, 116233, 205643, 232466, 411286, 464932, 822572, 929864, 1645144, 2673359, 5346718, 10693436, 21386872]

約数ペア:

[(1, 21386872), (2, 10693436), (4, 5346718), (8, 2673359), (13, 1645144), (23, 929864), (26, 822572), (46, 464932), (52, 411286), (92, 232466), (104, 205643), (184, 116233), (299, 71528), (598, 35764), (1196, 17882), (2392, 8941)]