21557820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{359297}}^1$

素因数の和:359309

約数の個数: 24

約数和(自身を含む): 60362064

約数和(自身を除く): 38804244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 359297, 718594, 1077891, 1437188, 1796485, 2155782, 3592970, 4311564, 5389455, 7185940, 10778910, 21557820]

約数ペア:

[(1, 21557820), (2, 10778910), (3, 7185940), (4, 5389455), (5, 4311564), (6, 3592970), (10, 2155782), (12, 1796485), (15, 1437188), (20, 1077891), (30, 718594), (60, 359297)]