20447679

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20717}}^1$

素因数の和:20774

約数の個数: 16

約数和(自身を含む): 31822848

約数和(自身を除く): 11375169

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20717, 62151, 145019, 435057, 973699, 2921097, 6815893, 20447679]

約数ペア:

[(1, 20447679), (3, 6815893), (7, 2921097), (21, 973699), (47, 435057), (141, 145019), (329, 62151), (987, 20717)]