78979220

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{36229}}^1$

素因数の和:36347

約数の個数: 24

約数和(自身を含む): 167382600

約数和(自身を除く): 88403380

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 36229, 72458, 144916, 181145, 362290, 724580, 3948961, 7897922, 15795844, 19744805, 39489610, 78979220]

約数ペア:

[(1, 78979220), (2, 39489610), (4, 19744805), (5, 15795844), (10, 7897922), (20, 3948961), (109, 724580), (218, 362290), (436, 181145), (545, 144916), (1090, 72458), (2180, 36229)]