21969645

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 36408960

約数和(自身を除く): 14439315

約数列:

[1, 3, 5, 15, 41, 123, 139, 205, 257, 417, 615, 695, 771, 1285, 2085, 3855, 5699, 10537, 17097, 28495, 31611, 35723, 52685, 85485, 107169, 158055, 178615, 535845, 1464643, 4393929, 7323215, 21969645]

約数ペア:

[(1, 21969645), (3, 7323215), (5, 4393929), (15, 1464643), (41, 535845), (123, 178615), (139, 158055), (205, 107169), (257, 85485), (417, 52685), (615, 35723), (695, 31611), (771, 28495), (1285, 17097), (2085, 10537), (3855, 5699)]