21033155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1279}}^1$

素因数の和:1331

約数の個数: 32

約数和(自身を含む): 30965760

約数和(自身を除く): 9932605

約数列:

[1, 5, 11, 13, 23, 55, 65, 115, 143, 253, 299, 715, 1265, 1279, 1495, 3289, 6395, 14069, 16445, 16627, 29417, 70345, 83135, 147085, 182897, 323587, 382421, 914485, 1617935, 1912105, 4206631, 21033155]

約数ペア:

[(1, 21033155), (5, 4206631), (11, 1912105), (13, 1617935), (23, 914485), (55, 382421), (65, 323587), (115, 182897), (143, 147085), (253, 83135), (299, 70345), (715, 29417), (1265, 16627), (1279, 16445), (1495, 14069), (3289, 6395)]