25481960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13001}}^1$

素因数の和:13026

約数の個数: 48

約数和(自身を含む): 66700260

約数和(自身を除く): 41218300

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, 13001, 26002, 52004, 65005, 91007, 104008, 130010, 182014, 260020, 364028, 455035, 520040, 637049, 728056, 910070, 1274098, 1820140, 2548196, 3185245, 3640280, 5096392, 6370490, 12740980, 25481960]

約数ペア:

[(1, 25481960), (2, 12740980), (4, 6370490), (5, 5096392), (7, 3640280), (8, 3185245), (10, 2548196), (14, 1820140), (20, 1274098), (28, 910070), (35, 728056), (40, 637049), (49, 520040), (56, 455035), (70, 364028), (98, 260020), (140, 182014), (196, 130010), (245, 104008), (280, 91007), (392, 65005), (490, 52004), (980, 26002), (1960, 13001)]