1981240

素因数分解:

$2^3\times 5^1\times {\mathrm{49531}}^1$

素因数の和:49542

約数の個数: 16

約数和(自身を含む): 4457880

約数和(自身を除く): 2476640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 49531, 99062, 198124, 247655, 396248, 495310, 990620, 1981240]

約数ペア:

[(1, 1981240), (2, 990620), (4, 495310), (5, 396248), (8, 247655), (10, 198124), (20, 99062), (40, 49531)]