13242920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4663}}^1$

素因数の和:4745

約数の個数: 32

約数和(自身を含む): 30222720

約数和(自身を除く): 16979800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 4663, 9326, 18652, 23315, 37304, 46630, 93260, 186520, 331073, 662146, 1324292, 1655365, 2648584, 3310730, 6621460, 13242920]

約数ペア:

[(1, 13242920), (2, 6621460), (4, 3310730), (5, 2648584), (8, 1655365), (10, 1324292), (20, 662146), (40, 331073), (71, 186520), (142, 93260), (284, 46630), (355, 37304), (568, 23315), (710, 18652), (1420, 9326), (2840, 4663)]