21996

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1$

素因数の和:70

約数の個数: 36

約数和(自身を含む): 61152

約数和(自身を除く): 39156

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 47, 52, 78, 94, 117, 141, 156, 188, 234, 282, 423, 468, 564, 611, 846, 1222, 1692, 1833, 2444, 3666, 5499, 7332, 10998, 21996]

約数ペア:

[(1, 21996), (2, 10998), (3, 7332), (4, 5499), (6, 3666), (9, 2444), (12, 1833), (13, 1692), (18, 1222), (26, 846), (36, 611), (39, 564), (47, 468), (52, 423), (78, 282), (94, 234), (117, 188), (141, 156)]