20895417

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{479}}^1$

素因数の和:653

約数の個数: 24

約数和(自身を含む): 31299840

約数和(自身を除く): 10404423

約数列:

[1, 3, 9, 37, 111, 131, 333, 393, 479, 1179, 1437, 4311, 4847, 14541, 17723, 43623, 53169, 62749, 159507, 188247, 564741, 2321713, 6965139, 20895417]

約数ペア:

[(1, 20895417), (3, 6965139), (9, 2321713), (37, 564741), (111, 188247), (131, 159507), (333, 62749), (393, 53169), (479, 43623), (1179, 17723), (1437, 14541), (4311, 4847)]