40400865

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20879}}^1$

素因数の和:20933

約数の個数: 24

約数和(自身を含む): 71660160

約数和(自身を除く): 31259295

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 20879, 62637, 104395, 187911, 313185, 897797, 939555, 2693391, 4488985, 8080173, 13466955, 40400865]

約数ペア:

[(1, 40400865), (3, 13466955), (5, 8080173), (9, 4488985), (15, 2693391), (43, 939555), (45, 897797), (129, 313185), (215, 187911), (387, 104395), (645, 62637), (1935, 20879)]