20812516

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{5261}}^1$

素因数の和:5331

約数の個数: 24

約数和(自身を含む): 38896704

約数和(自身を除く): 18084188

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956, 5261, 10522, 21044, 121003, 226223, 242006, 452446, 484012, 904892, 5203129, 10406258, 20812516]

約数ペア:

[(1, 20812516), (2, 10406258), (4, 5203129), (23, 904892), (43, 484012), (46, 452446), (86, 242006), (92, 226223), (172, 121003), (989, 21044), (1978, 10522), (3956, 5261)]