38921720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 90288000

約数和(自身を除く): 51366280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 109, 113, 158, 218, 226, 316, 395, 436, 452, 545, 565, 632, 790, 872, 904, 1090, 1130, 1580, 2180, 2260, 3160, 4360, 4520, 8611, 8927, 12317, 17222, 17854, 24634, 34444, 35708, 43055, 44635, 49268, 61585, 68888, 71416, 86110, 89270, 98536, 123170, 172220, 178540, 246340, 344440, 357080, 492680, 973043, 1946086, 3892172, 4865215, 7784344, 9730430, 19460860, 38921720]

約数ペア:

[(1, 38921720), (2, 19460860), (4, 9730430), (5, 7784344), (8, 4865215), (10, 3892172), (20, 1946086), (40, 973043), (79, 492680), (109, 357080), (113, 344440), (158, 246340), (218, 178540), (226, 172220), (316, 123170), (395, 98536), (436, 89270), (452, 86110), (545, 71416), (565, 68888), (632, 61585), (790, 49268), (872, 44635), (904, 43055), (1090, 35708), (1130, 34444), (1580, 24634), (2180, 17854), (2260, 17222), (3160, 12317), (4360, 8927), (4520, 8611)]