20812556

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{727}}^1$

素因数の和:1169

約数の個数: 24

約数和(自身を含む): 38709216

約数和(自身を除く): 17896660

約数列:

[1, 2, 4, 17, 34, 68, 421, 727, 842, 1454, 1684, 2908, 7157, 12359, 14314, 24718, 28628, 49436, 306067, 612134, 1224268, 5203139, 10406278, 20812556]

約数ペア:

[(1, 20812556), (2, 10406278), (4, 5203139), (17, 1224268), (34, 612134), (68, 306067), (421, 49436), (727, 28628), (842, 24718), (1454, 14314), (1684, 12359), (2908, 7157)]