21981578

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{1543}}^1$

素因数の和:1981

約数の個数: 16

約数和(自身を含む): 35017920

約数和(自身を除く): 13036342

約数列:

[1, 2, 17, 34, 419, 838, 1543, 3086, 7123, 14246, 26231, 52462, 646517, 1293034, 10990789, 21981578]

約数ペア:

[(1, 21981578), (2, 10990789), (17, 1293034), (34, 646517), (419, 52462), (838, 26231), (1543, 14246), (3086, 7123)]