28205710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{216967}}^1$

素因数の和:216987

約数の個数: 16

約数和(自身を含む): 54675936

約数和(自身を除く): 26470226

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 216967, 433934, 1084835, 2169670, 2820571, 5641142, 14102855, 28205710]

約数ペア:

[(1, 28205710), (2, 14102855), (5, 5641142), (10, 2820571), (13, 2169670), (26, 1084835), (65, 433934), (130, 216967)]