128593640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{65609}}^1$

素因数の和:65634

約数の個数: 48

約数和(自身を含む): 336579300

約数和(自身を除く): 207985660

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, 65609, 131218, 262436, 328045, 459263, 524872, 656090, 918526, 1312180, 1837052, 2296315, 2624360, 3214841, 3674104, 4592630, 6429682, 9185260, 12859364, 16074205, 18370520, 25718728, 32148410, 64296820, 128593640]

約数ペア:

[(1, 128593640), (2, 64296820), (4, 32148410), (5, 25718728), (7, 18370520), (8, 16074205), (10, 12859364), (14, 9185260), (20, 6429682), (28, 4592630), (35, 3674104), (40, 3214841), (49, 2624360), (56, 2296315), (70, 1837052), (98, 1312180), (140, 918526), (196, 656090), (245, 524872), (280, 459263), (392, 328045), (490, 262436), (980, 131218), (1960, 65609)]