21981687

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1103}}^1$

素因数の和:1199

約数の個数: 32

約数和(自身を含む): 36599808

約数和(自身を除く): 14618121

約数列:

[1, 3, 7, 13, 21, 39, 73, 91, 219, 273, 511, 949, 1103, 1533, 2847, 3309, 6643, 7721, 14339, 19929, 23163, 43017, 80519, 100373, 241557, 301119, 563633, 1046747, 1690899, 3140241, 7327229, 21981687]

約数ペア:

[(1, 21981687), (3, 7327229), (7, 3140241), (13, 1690899), (21, 1046747), (39, 563633), (73, 301119), (91, 241557), (219, 100373), (273, 80519), (511, 43017), (949, 23163), (1103, 19929), (1533, 14339), (2847, 7721), (3309, 6643)]