20685928

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{349}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 19634072

約数列:

[1, 2, 4, 8, 31, 62, 124, 239, 248, 349, 478, 698, 956, 1396, 1912, 2792, 7409, 10819, 14818, 21638, 29636, 43276, 59272, 83411, 86552, 166822, 333644, 667288, 2585741, 5171482, 10342964, 20685928]

約数ペア:

[(1, 20685928), (2, 10342964), (4, 5171482), (8, 2585741), (31, 667288), (62, 333644), (124, 166822), (239, 86552), (248, 83411), (349, 59272), (478, 43276), (698, 29636), (956, 21638), (1396, 14818), (1912, 10819), (2792, 7409)]