18774820

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2341}}^1$

素因数の和:2751

約数の個数: 24

約数和(自身を含む): 39542328

約数和(自身を除く): 20767508

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 2341, 4010, 4682, 8020, 9364, 11705, 23410, 46820, 938741, 1877482, 3754964, 4693705, 9387410, 18774820]

約数ペア:

[(1, 18774820), (2, 9387410), (4, 4693705), (5, 3754964), (10, 1877482), (20, 938741), (401, 46820), (802, 23410), (1604, 11705), (2005, 9364), (2341, 8020), (4010, 4682)]