21910135

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 30260160

約数和(自身を除く): 8350025

約数列:

[1, 5, 13, 19, 65, 95, 113, 157, 247, 565, 785, 1235, 1469, 2041, 2147, 2983, 7345, 10205, 10735, 14915, 17741, 27911, 38779, 88705, 139555, 193895, 230633, 337079, 1153165, 1685395, 4382027, 21910135]

約数ペア:

[(1, 21910135), (5, 4382027), (13, 1685395), (19, 1153165), (65, 337079), (95, 230633), (113, 193895), (157, 139555), (247, 88705), (565, 38779), (785, 27911), (1235, 17741), (1469, 14915), (2041, 10735), (2147, 10205), (2983, 7345)]