20318291

素因数分解:

$7^3\times {\mathrm{37}}^1\times {\mathrm{1601}}^1$

素因数の和:1659

約数の個数: 16

約数和(自身を含む): 24350400

約数和(自身を除く): 4032109

約数列:

[1, 7, 37, 49, 259, 343, 1601, 1813, 11207, 12691, 59237, 78449, 414659, 549143, 2902613, 20318291]

約数ペア:

[(1, 20318291), (7, 2902613), (37, 549143), (49, 414659), (259, 78449), (343, 59237), (1601, 12691), (1813, 11207)]