20913263

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1451}}^1$

素因数の和:1558

約数の個数: 16

約数和(自身を含む): 25090560

約数和(自身を除く): 4177297

約数列:

[1, 7, 29, 71, 203, 497, 1451, 2059, 10157, 14413, 42079, 103021, 294553, 721147, 2987609, 20913263]

約数ペア:

[(1, 20913263), (7, 2987609), (29, 721147), (71, 294553), (203, 103021), (497, 42079), (1451, 14413), (2059, 10157)]