21581001

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1327}}^1$

素因数の和:1485

約数の個数: 24

約数和(自身を含む): 33837440

約数和(自身を除く): 12256439

約数列:

[1, 3, 9, 13, 39, 117, 139, 417, 1251, 1327, 1807, 3981, 5421, 11943, 16263, 17251, 51753, 155259, 184453, 553359, 1660077, 2397889, 7193667, 21581001]

約数ペア:

[(1, 21581001), (3, 7193667), (9, 2397889), (13, 1660077), (39, 553359), (117, 184453), (139, 155259), (417, 51753), (1251, 17251), (1327, 16263), (1807, 11943), (3981, 5421)]