20247640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72313}}^1$

素因数の和:72331

約数の個数: 32

約数和(自身を含む): 52066080

約数和(自身を除く): 31818440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72313, 144626, 289252, 361565, 506191, 578504, 723130, 1012382, 1446260, 2024764, 2530955, 2892520, 4049528, 5061910, 10123820, 20247640]

約数ペア:

[(1, 20247640), (2, 10123820), (4, 5061910), (5, 4049528), (7, 2892520), (8, 2530955), (10, 2024764), (14, 1446260), (20, 1012382), (28, 723130), (35, 578504), (40, 506191), (56, 361565), (70, 289252), (140, 144626), (280, 72313)]