21295001

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{971}}^1$

素因数の和:1232

約数の個数: 16

約数和(自身を含む): 26345088

約数和(自身を除く): 5050087

約数列:

[1, 7, 13, 91, 241, 971, 1687, 3133, 6797, 12623, 21931, 88361, 234011, 1638077, 3042143, 21295001]

約数ペア:

[(1, 21295001), (7, 3042143), (13, 1638077), (91, 234011), (241, 88361), (971, 21931), (1687, 12623), (3133, 6797)]