20875869

素因数分解:

$3^2\times 7^1\times {\mathrm{229}}^1\times {\mathrm{1447}}^1$

素因数の和:1689

約数の個数: 24

約数和(自身を含む): 34636160

約数和(自身を除く): 13760291

約数列:

[1, 3, 7, 9, 21, 63, 229, 687, 1447, 1603, 2061, 4341, 4809, 10129, 13023, 14427, 30387, 91161, 331363, 994089, 2319541, 2982267, 6958623, 20875869]

約数ペア:

[(1, 20875869), (3, 6958623), (7, 2982267), (9, 2319541), (21, 994089), (63, 331363), (229, 91161), (687, 30387), (1447, 14427), (1603, 13023), (2061, 10129), (4341, 4809)]