20921742

素因数分解:

$2^1\times 3^2\times {\mathrm{271}}^1\times {\mathrm{4289}}^1$

素因数の和:4568

約数の個数: 24

約数和(自身を含む): 45508320

約数和(自身を除く): 24586578

約数列:

[1, 2, 3, 6, 9, 18, 271, 542, 813, 1626, 2439, 4289, 4878, 8578, 12867, 25734, 38601, 77202, 1162319, 2324638, 3486957, 6973914, 10460871, 20921742]

約数ペア:

[(1, 20921742), (2, 10460871), (3, 6973914), (6, 3486957), (9, 2324638), (18, 1162319), (271, 77202), (542, 38601), (813, 25734), (1626, 12867), (2439, 8578), (4289, 4878)]