21665917

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{5807}}^1$

素因数の和:5868

約数の個数: 16

約数和(自身を含む): 27320832

約数和(自身を除く): 5654915

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 5807, 40649, 75491, 238087, 528437, 1666609, 3095131, 21665917]

約数ペア:

[(1, 21665917), (7, 3095131), (13, 1666609), (41, 528437), (91, 238087), (287, 75491), (533, 40649), (3731, 5807)]