20995485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4877}}^1$

素因数の和:4933

約数の個数: 32

約数和(自身を含む): 39336192

約数和(自身を除く): 18340707

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 205, 287, 615, 861, 1435, 4305, 4877, 14631, 24385, 34139, 73155, 102417, 170695, 199957, 512085, 599871, 999785, 1399699, 2999355, 4199097, 6998495, 20995485]

約数ペア:

[(1, 20995485), (3, 6998495), (5, 4199097), (7, 2999355), (15, 1399699), (21, 999785), (35, 599871), (41, 512085), (105, 199957), (123, 170695), (205, 102417), (287, 73155), (615, 34139), (861, 24385), (1435, 14631), (4305, 4877)]