19650440

素因数分解:

$2^3\times 5^1\times {\mathrm{491261}}^1$

素因数の和:491272

約数の個数: 16

約数和(自身を含む): 44213580

約数和(自身を除く): 24563140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491261, 982522, 1965044, 2456305, 3930088, 4912610, 9825220, 19650440]

約数ペア:

[(1, 19650440), (2, 9825220), (4, 4912610), (5, 3930088), (8, 2456305), (10, 1965044), (20, 982522), (40, 491261)]