20158552520

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3968219}}^1$

素因数の和:3968357

約数の個数: 32

約数和(自身を含む): 45713894400

約数和(自身を除く): 25555341880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 3968219, 7936438, 15872876, 19841095, 31745752, 39682190, 79364380, 158728760, 503963813, 1007927626, 2015855252, 2519819065, 4031710504, 5039638130, 10079276260, 20158552520]

約数ペア:

[(1, 20158552520), (2, 10079276260), (4, 5039638130), (5, 4031710504), (8, 2519819065), (10, 2015855252), (20, 1007927626), (40, 503963813), (127, 158728760), (254, 79364380), (508, 39682190), (635, 31745752), (1016, 19841095), (1270, 15872876), (2540, 7936438), (5080, 3968219)]