864987921

素因数分解:

$3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{125963}}^1$

素因数の和:126085

約数の個数: 24

約数和(自身を含む): 1441028160

約数和(自身を除く): 576040239

約数列:

[1, 3, 7, 9, 21, 63, 109, 327, 763, 981, 2289, 6867, 125963, 377889, 881741, 1133667, 2645223, 7935669, 13729967, 41189901, 96109769, 123569703, 288329307, 864987921]

約数ペア:

[(1, 864987921), (3, 288329307), (7, 123569703), (9, 96109769), (21, 41189901), (63, 13729967), (109, 7935669), (327, 2645223), (763, 1133667), (981, 881741), (2289, 377889), (6867, 125963)]