21685421

素因数分解:

${\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{241}}^1$

素因数の和:404

約数の個数: 16

約数和(自身を含む): 23696640

約数和(自身を除く): 2011219

約数列:

[1, 17, 67, 79, 241, 1139, 1343, 4097, 5293, 16147, 19039, 89981, 274499, 323663, 1275613, 21685421]

約数ペア:

[(1, 21685421), (17, 1275613), (67, 323663), (79, 274499), (241, 89981), (1139, 19039), (1343, 16147), (4097, 5293)]