68780740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{10453}}^1$

素因数の和:10516

約数の個数: 48

約数和(自身を含む): 168602112

約数和(自身を除く): 99821372

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3290, 6580, 10453, 20906, 41812, 52265, 73171, 104530, 146342, 209060, 292684, 365855, 491291, 731710, 982582, 1463420, 1965164, 2456455, 3439037, 4912910, 6878074, 9825820, 13756148, 17195185, 34390370, 68780740]

約数ペア:

[(1, 68780740), (2, 34390370), (4, 17195185), (5, 13756148), (7, 9825820), (10, 6878074), (14, 4912910), (20, 3439037), (28, 2456455), (35, 1965164), (47, 1463420), (70, 982582), (94, 731710), (140, 491291), (188, 365855), (235, 292684), (329, 209060), (470, 146342), (658, 104530), (940, 73171), (1316, 52265), (1645, 41812), (3290, 20906), (6580, 10453)]