20067999

素因数分解:

$3^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{647}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 31321728

約数和(自身を除く): 11253729

約数列:

[1, 3, 7, 21, 49, 147, 211, 633, 647, 1477, 1941, 4431, 4529, 10339, 13587, 31017, 31703, 95109, 136517, 409551, 955619, 2866857, 6689333, 20067999]

約数ペア:

[(1, 20067999), (3, 6689333), (7, 2866857), (21, 955619), (49, 409551), (147, 136517), (211, 95109), (633, 31703), (647, 31017), (1477, 13587), (1941, 10339), (4431, 4529)]