128640680

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{65633}}^1$

素因数の和:65658

約数の個数: 48

約数和(自身を含む): 336702420

約数和(自身を除く): 208061740

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 65633, 131266, 262532, 328165, 459431, 525064, 656330, 918862, 1312660, 1837724, 2297155, 2625320, 3216017, 3675448, 4594310, 6432034, 9188620, 12864068, 16080085, 18377240, 25728136, 32160170, 64320340, 128640680]

約数ペア:

[(1, 128640680), (2, 64320340), (4, 32160170), (5, 25728136), (7, 18377240), (8, 16080085), (10, 12864068), (14, 9188620), (20, 6432034), (28, 4594310), (35, 3675448), (40, 3216017), (49, 2625320), (56, 2297155), (70, 1837724), (98, 1312660), (140, 918862), (196, 656330), (245, 525064), (280, 459431), (392, 328165), (490, 262532), (980, 131266), (1960, 65633)]