21578499

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{367}}^1$

素因数の和:559

約数の個数: 24

約数和(自身を含む): 32148480

約数和(自身を除く): 10569981

約数列:

[1, 3, 9, 47, 139, 141, 367, 417, 423, 1101, 1251, 3303, 6533, 17249, 19599, 51013, 51747, 58797, 153039, 155241, 459117, 2397611, 7192833, 21578499]

約数ペア:

[(1, 21578499), (3, 7192833), (9, 2397611), (47, 459117), (139, 155241), (141, 153039), (367, 58797), (417, 51747), (423, 51013), (1101, 19599), (1251, 17249), (3303, 6533)]