28639765

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{10627}}^1$

素因数の和:10657

約数の個数: 24

約数和(自身を含む): 43617312

約数和(自身を除く): 14977547

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 10627, 53135, 74389, 116897, 371945, 520723, 584485, 818279, 2603615, 4091395, 5727953, 28639765]

約数ペア:

[(1, 28639765), (5, 5727953), (7, 4091395), (11, 2603615), (35, 818279), (49, 584485), (55, 520723), (77, 371945), (245, 116897), (385, 74389), (539, 53135), (2695, 10627)]