20984415

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{229}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 34776000

約数和(自身を除く): 13791585

約数列:

[1, 3, 5, 15, 41, 123, 149, 205, 229, 447, 615, 687, 745, 1145, 2235, 3435, 6109, 9389, 18327, 28167, 30545, 34121, 46945, 91635, 102363, 140835, 170605, 511815, 1398961, 4196883, 6994805, 20984415]

約数ペア:

[(1, 20984415), (3, 6994805), (5, 4196883), (15, 1398961), (41, 511815), (123, 170605), (149, 140835), (205, 102363), (229, 91635), (447, 46945), (615, 34121), (687, 30545), (745, 28167), (1145, 18327), (2235, 9389), (3435, 6109)]