21096550

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^2\times {\mathrm{251}}^1$

素因数の和:345

約数の個数: 36

約数和(自身を含む): 40380228

約数和(自身を除く): 19283678

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 205, 251, 410, 502, 1025, 1255, 1681, 2050, 2510, 3362, 6275, 8405, 10291, 12550, 16810, 20582, 42025, 51455, 84050, 102910, 257275, 421931, 514550, 843862, 2109655, 4219310, 10548275, 21096550]

約数ペア:

[(1, 21096550), (2, 10548275), (5, 4219310), (10, 2109655), (25, 843862), (41, 514550), (50, 421931), (82, 257275), (205, 102910), (251, 84050), (410, 51455), (502, 42025), (1025, 20582), (1255, 16810), (1681, 12550), (2050, 10291), (2510, 8405), (3362, 6275)]