20406015

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{64781}}^1$

素因数の和:64799

約数の個数: 24

約数和(自身を含む): 40423968

約数和(自身を除く): 20017953

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 64781, 194343, 323905, 453467, 583029, 971715, 1360401, 2267335, 2915145, 4081203, 6802005, 20406015]

約数ペア:

[(1, 20406015), (3, 6802005), (5, 4081203), (7, 2915145), (9, 2267335), (15, 1360401), (21, 971715), (35, 583029), (45, 453467), (63, 323905), (105, 194343), (315, 64781)]