20042945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 27143424

約数和(自身を除く): 7100479

約数列:

[1, 5, 13, 43, 65, 71, 101, 215, 355, 505, 559, 923, 1313, 2795, 3053, 4343, 4615, 6565, 7171, 15265, 21715, 35855, 39689, 56459, 93223, 198445, 282295, 308353, 466115, 1541765, 4008589, 20042945]

約数ペア:

[(1, 20042945), (5, 4008589), (13, 1541765), (43, 466115), (65, 308353), (71, 282295), (101, 198445), (215, 93223), (355, 56459), (505, 39689), (559, 35855), (923, 21715), (1313, 15265), (2795, 7171), (3053, 6565), (4343, 4615)]