20879865

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11317}}^1$

素因数の和:11369

約数の個数: 24

約数和(自身を含む): 37077768

約数和(自身を除く): 16197903

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 369, 615, 1845, 11317, 33951, 56585, 101853, 169755, 463997, 509265, 1391991, 2319985, 4175973, 6959955, 20879865]

約数ペア:

[(1, 20879865), (3, 6959955), (5, 4175973), (9, 2319985), (15, 1391991), (41, 509265), (45, 463997), (123, 169755), (205, 101853), (369, 56585), (615, 33951), (1845, 11317)]