21877160

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2179}}^1$

素因数の和:2441

約数の個数: 32

約数和(自身を含む): 49442400

約数和(自身を除く): 27565240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2179, 2510, 4358, 5020, 8716, 10040, 10895, 17432, 21790, 43580, 87160, 546929, 1093858, 2187716, 2734645, 4375432, 5469290, 10938580, 21877160]

約数ペア:

[(1, 21877160), (2, 10938580), (4, 5469290), (5, 4375432), (8, 2734645), (10, 2187716), (20, 1093858), (40, 546929), (251, 87160), (502, 43580), (1004, 21790), (1255, 17432), (2008, 10895), (2179, 10040), (2510, 8716), (4358, 5020)]