9988760

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 23760000

約数和(自身を除く): 13771240

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 79, 109, 116, 145, 158, 218, 232, 290, 316, 395, 436, 545, 580, 632, 790, 872, 1090, 1160, 1580, 2180, 2291, 3160, 3161, 4360, 4582, 6322, 8611, 9164, 11455, 12644, 15805, 17222, 18328, 22910, 25288, 31610, 34444, 43055, 45820, 63220, 68888, 86110, 91640, 126440, 172220, 249719, 344440, 499438, 998876, 1248595, 1997752, 2497190, 4994380, 9988760]

約数ペア:

[(1, 9988760), (2, 4994380), (4, 2497190), (5, 1997752), (8, 1248595), (10, 998876), (20, 499438), (29, 344440), (40, 249719), (58, 172220), (79, 126440), (109, 91640), (116, 86110), (145, 68888), (158, 63220), (218, 45820), (232, 43055), (290, 34444), (316, 31610), (395, 25288), (436, 22910), (545, 18328), (580, 17222), (632, 15805), (790, 12644), (872, 11455), (1090, 9164), (1160, 8611), (1580, 6322), (2180, 4582), (2291, 4360), (3160, 3161)]