19702520

素因数分解:

$2^3\times 5^1\times {\mathrm{492563}}^1$

素因数の和:492574

約数の個数: 16

約数和(自身を含む): 44330760

約数和(自身を除く): 24628240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 492563, 985126, 1970252, 2462815, 3940504, 4925630, 9851260, 19702520]

約数ペア:

[(1, 19702520), (2, 9851260), (4, 4925630), (5, 3940504), (8, 2462815), (10, 1970252), (20, 985126), (40, 492563)]