20523489

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 11732511

約数列:

[1, 3, 7, 21, 79, 89, 139, 237, 267, 417, 553, 623, 973, 1659, 1869, 2919, 7031, 10981, 12371, 21093, 32943, 37113, 49217, 76867, 86597, 147651, 230601, 259791, 977309, 2931927, 6841163, 20523489]

約数ペア:

[(1, 20523489), (3, 6841163), (7, 2931927), (21, 977309), (79, 259791), (89, 230601), (139, 147651), (237, 86597), (267, 76867), (417, 49217), (553, 37113), (623, 32943), (973, 21093), (1659, 12371), (1869, 10981), (2919, 7031)]