21229580

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{4229}}^1$

素因数の和:4489

約数の個数: 24

約数和(自身を含む): 44770320

約数和(自身を除く): 23540740

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 4229, 5020, 8458, 16916, 21145, 42290, 84580, 1061479, 2122958, 4245916, 5307395, 10614790, 21229580]

約数ペア:

[(1, 21229580), (2, 10614790), (4, 5307395), (5, 4245916), (10, 2122958), (20, 1061479), (251, 84580), (502, 42290), (1004, 21145), (1255, 16916), (2510, 8458), (4229, 5020)]