21966879

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 11487201

約数列:

[1, 3, 11, 31, 33, 93, 109, 197, 327, 341, 591, 1023, 1199, 2167, 3379, 3597, 6107, 6501, 10137, 18321, 21473, 37169, 64419, 67177, 111507, 201531, 236203, 665663, 708609, 1996989, 7322293, 21966879]

約数ペア:

[(1, 21966879), (3, 7322293), (11, 1996989), (31, 708609), (33, 665663), (93, 236203), (109, 201531), (197, 111507), (327, 67177), (341, 64419), (591, 37169), (1023, 21473), (1199, 18321), (2167, 10137), (3379, 6501), (3597, 6107)]