19749580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2003}}^1$

素因数の和:2058

約数の個数: 48

約数和(自身を含む): 45450720

約数和(自身を除く): 25701140

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2003, 2465, 4006, 4930, 8012, 9860, 10015, 20030, 34051, 40060, 58087, 68102, 116174, 136204, 170255, 232348, 290435, 340510, 580870, 681020, 987479, 1161740, 1974958, 3949916, 4937395, 9874790, 19749580]

約数ペア:

[(1, 19749580), (2, 9874790), (4, 4937395), (5, 3949916), (10, 1974958), (17, 1161740), (20, 987479), (29, 681020), (34, 580870), (58, 340510), (68, 290435), (85, 232348), (116, 170255), (145, 136204), (170, 116174), (290, 68102), (340, 58087), (493, 40060), (580, 34051), (986, 20030), (1972, 10015), (2003, 9860), (2465, 8012), (4006, 4930)]