18995620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{563}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 45859968

約数和(自身を除く): 26864348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 241, 482, 563, 964, 1126, 1205, 1687, 2252, 2410, 2815, 3374, 3941, 4820, 5630, 6748, 7882, 8435, 11260, 15764, 16870, 19705, 33740, 39410, 78820, 135683, 271366, 542732, 678415, 949781, 1356830, 1899562, 2713660, 3799124, 4748905, 9497810, 18995620]

約数ペア:

[(1, 18995620), (2, 9497810), (4, 4748905), (5, 3799124), (7, 2713660), (10, 1899562), (14, 1356830), (20, 949781), (28, 678415), (35, 542732), (70, 271366), (140, 135683), (241, 78820), (482, 39410), (563, 33740), (964, 19705), (1126, 16870), (1205, 15764), (1687, 11260), (2252, 8435), (2410, 7882), (2815, 6748), (3374, 5630), (3941, 4820)]