19851020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{141793}}^1$

素因数の和:141809

約数の個数: 24

約数和(自身を含む): 47642784

約数和(自身を除く): 27791764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 141793, 283586, 567172, 708965, 992551, 1417930, 1985102, 2835860, 3970204, 4962755, 9925510, 19851020]

約数ペア:

[(1, 19851020), (2, 9925510), (4, 4962755), (5, 3970204), (7, 2835860), (10, 1985102), (14, 1417930), (20, 992551), (28, 708965), (35, 567172), (70, 283586), (140, 141793)]