19757780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20161}}^1$

素因数の和:20184

約数の個数: 36

約数和(自身を含む): 48267828

約数和(自身を除く): 28510048

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20161, 40322, 80644, 100805, 141127, 201610, 282254, 403220, 564508, 705635, 987889, 1411270, 1975778, 2822540, 3951556, 4939445, 9878890, 19757780]

約数ペア:

[(1, 19757780), (2, 9878890), (4, 4939445), (5, 3951556), (7, 2822540), (10, 1975778), (14, 1411270), (20, 987889), (28, 705635), (35, 564508), (49, 403220), (70, 282254), (98, 201610), (140, 141127), (196, 100805), (245, 80644), (490, 40322), (980, 20161)]