21060739

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 26273808

約数和(自身を除く): 5213069

約数列:

[1, 7, 17, 49, 119, 131, 193, 833, 917, 1351, 2227, 3281, 6419, 9457, 15589, 22967, 25283, 109123, 160769, 176981, 429811, 1238867, 3008677, 21060739]

約数ペア:

[(1, 21060739), (7, 3008677), (17, 1238867), (49, 429811), (119, 176981), (131, 160769), (193, 109123), (833, 25283), (917, 22967), (1351, 15589), (2227, 9457), (3281, 6419)]