19716417

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2389}}^1$

素因数の和:2533

約数の個数: 24

約数和(自身を含む): 32809920

約数和(自身を除く): 13093503

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2389, 2751, 7167, 8253, 16723, 21501, 50169, 150507, 312959, 938877, 2190713, 2816631, 6572139, 19716417]

約数ペア:

[(1, 19716417), (3, 6572139), (7, 2816631), (9, 2190713), (21, 938877), (63, 312959), (131, 150507), (393, 50169), (917, 21501), (1179, 16723), (2389, 8253), (2751, 7167)]