21556899

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26321}}^1$

素因数の和:26347

約数の個数: 24

約数和(自身を含む): 38324832

約数和(自身を除く): 16767933

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26321, 78963, 184247, 236889, 342173, 552741, 1026519, 1658223, 2395211, 3079557, 7185633, 21556899]

約数ペア:

[(1, 21556899), (3, 7185633), (7, 3079557), (9, 2395211), (13, 1658223), (21, 1026519), (39, 552741), (63, 342173), (91, 236889), (117, 184247), (273, 78963), (819, 26321)]