21294518

素因数分解:

$2^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{1103}}^1$

素因数の和:1316

約数の個数: 24

約数和(自身を含む): 37379232

約数和(自身を除く): 16084714

約数列:

[1, 2, 7, 14, 49, 98, 197, 394, 1103, 1379, 2206, 2758, 7721, 9653, 15442, 19306, 54047, 108094, 217291, 434582, 1521037, 3042074, 10647259, 21294518]

約数ペア:

[(1, 21294518), (2, 10647259), (7, 3042074), (14, 1521037), (49, 434582), (98, 217291), (197, 108094), (394, 54047), (1103, 19306), (1379, 15442), (2206, 9653), (2758, 7721)]