20903163

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{991}}^1$

素因数の和:1162

約数の個数: 16

約数和(自身を含む): 28569600

約数和(自身を除く): 7666437

約数列:

[1, 3, 79, 89, 237, 267, 991, 2973, 7031, 21093, 78289, 88199, 234867, 264597, 6967721, 20903163]

約数ペア:

[(1, 20903163), (3, 6967721), (79, 264597), (89, 234867), (237, 88199), (267, 78289), (991, 21093), (2973, 7031)]