21572157

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{719}}^1$

素因数の和:932

約数の個数: 16

約数和(自身を含む): 29410560

約数和(自身を除く): 7838403

約数列:

[1, 3, 73, 137, 219, 411, 719, 2157, 10001, 30003, 52487, 98503, 157461, 295509, 7190719, 21572157]

約数ペア:

[(1, 21572157), (3, 7190719), (73, 295509), (137, 157461), (219, 98503), (411, 52487), (719, 30003), (2157, 10001)]