68661057020

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{997}}^1\times {\mathrm{7013}}^1$

素因数の和:8510

約数の個数: 48

約数和(自身を含む): 144647421408

約数和(自身を除く): 75986364388

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 997, 1964, 1994, 2455, 3988, 4910, 4985, 7013, 9820, 9970, 14026, 19940, 28052, 35065, 70130, 140260, 489527, 979054, 1958108, 2447635, 3443383, 4895270, 6886766, 6991961, 9790540, 13773532, 13983922, 17216915, 27967844, 34433830, 34959805, 68867660, 69919610, 139839220, 3433052851, 6866105702, 13732211404, 17165264255, 34330528510, 68661057020]

約数ペア:

[(1, 68661057020), (2, 34330528510), (4, 17165264255), (5, 13732211404), (10, 6866105702), (20, 3433052851), (491, 139839220), (982, 69919610), (997, 68867660), (1964, 34959805), (1994, 34433830), (2455, 27967844), (3988, 17216915), (4910, 13983922), (4985, 13773532), (7013, 9790540), (9820, 6991961), (9970, 6886766), (14026, 4895270), (19940, 3443383), (28052, 2447635), (35065, 1958108), (70130, 979054), (140260, 489527)]