20403404

素因数分解:

$2^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2539}}^1$

素因数の和:2598

約数の個数: 36

約数和(自身を含む): 42565320

約数和(自身を除く): 22161916

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 574, 1148, 2009, 2539, 4018, 5078, 8036, 10156, 17773, 35546, 71092, 104099, 124411, 208198, 248822, 416396, 497644, 728693, 1457386, 2914772, 5100851, 10201702, 20403404]

約数ペア:

[(1, 20403404), (2, 10201702), (4, 5100851), (7, 2914772), (14, 1457386), (28, 728693), (41, 497644), (49, 416396), (82, 248822), (98, 208198), (164, 124411), (196, 104099), (287, 71092), (574, 35546), (1148, 17773), (2009, 10156), (2539, 8036), (4018, 5078)]