20812712

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{42649}}^1$

素因数の和:42716

約数の個数: 16

約数和(自身を含む): 39664500

約数和(自身を除く): 18851788

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 42649, 85298, 170596, 341192, 2601589, 5203178, 10406356, 20812712]

約数ペア:

[(1, 20812712), (2, 10406356), (4, 5203178), (8, 2601589), (61, 341192), (122, 170596), (244, 85298), (488, 42649)]