179640980

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{21961}}^1$

素因数の和:22379

約数の個数: 24

約数和(自身を含む): 378185640

約数和(自身を除く): 198544660

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 21961, 43922, 87844, 109805, 219610, 439220, 8982049, 17964098, 35928196, 44910245, 89820490, 179640980]

約数ペア:

[(1, 179640980), (2, 89820490), (4, 44910245), (5, 35928196), (10, 17964098), (20, 8982049), (409, 439220), (818, 219610), (1636, 109805), (2045, 87844), (4090, 43922), (8180, 21961)]