21903430

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^2\times {\mathrm{1303}}^1$

素因数の和:1392

約数の個数: 24

約数和(自身を含む): 40442256

約数和(自身を除く): 18538826

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 1303, 1681, 2606, 3362, 6515, 8405, 13030, 16810, 53423, 106846, 267115, 534230, 2190343, 4380686, 10951715, 21903430]

約数ペア:

[(1, 21903430), (2, 10951715), (5, 4380686), (10, 2190343), (41, 534230), (82, 267115), (205, 106846), (410, 53423), (1303, 16810), (1681, 13030), (2606, 8405), (3362, 6515)]