21915665

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{1279}}^1$

素因数の和:1456

約数の個数: 16

約数和(自身を含む): 27648000

約数和(自身を除く): 5732335

約数列:

[1, 5, 23, 115, 149, 745, 1279, 3427, 6395, 17135, 29417, 147085, 190571, 952855, 4383133, 21915665]

約数ペア:

[(1, 21915665), (5, 4383133), (23, 952855), (115, 190571), (149, 147085), (745, 29417), (1279, 17135), (3427, 6395)]