21492639

素因数分解:

$3^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{877}}^1$

素因数の和:1279

約数の個数: 24

約数和(自身を含む): 35611680

約数和(自身を除く): 14119041

約数列:

[1, 3, 7, 9, 21, 63, 389, 877, 1167, 2631, 2723, 3501, 6139, 7893, 8169, 18417, 24507, 55251, 341153, 1023459, 2388071, 3070377, 7164213, 21492639]

約数ペア:

[(1, 21492639), (3, 7164213), (7, 3070377), (9, 2388071), (21, 1023459), (63, 341153), (389, 55251), (877, 24507), (1167, 18417), (2631, 8169), (2723, 7893), (3501, 6139)]