225817921

素因数分解:

$7^2\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{443}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 268467264

約数和(自身を除く): 42649343

約数列:

[1, 7, 49, 101, 103, 443, 707, 721, 3101, 4949, 5047, 10403, 21707, 44743, 45629, 72821, 313201, 319403, 509747, 2192407, 2235821, 4608529, 32259703, 225817921]

約数ペア:

[(1, 225817921), (7, 32259703), (49, 4608529), (101, 2235821), (103, 2192407), (443, 509747), (707, 319403), (721, 313201), (3101, 72821), (4949, 45629), (5047, 44743), (10403, 21707)]