21015654

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{318419}}^1$

素因数の和:318435

約数の個数: 16

約数和(自身を含む): 45852480

約数和(自身を除く): 24836826

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 318419, 636838, 955257, 1910514, 3502609, 7005218, 10507827, 21015654]

約数ペア:

[(1, 21015654), (2, 10507827), (3, 7005218), (6, 3502609), (11, 1910514), (22, 955257), (33, 636838), (66, 318419)]