260005040

素因数分解:

$2^4\times 5^1\times {\mathrm{3250063}}^1$

素因数の和:3250076

約数の個数: 20

約数和(自身を含む): 604511904

約数和(自身を除く): 344506864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3250063, 6500126, 13000252, 16250315, 26000504, 32500630, 52001008, 65001260, 130002520, 260005040]

約数ペア:

[(1, 260005040), (2, 130002520), (4, 65001260), (5, 52001008), (8, 32500630), (10, 26000504), (16, 16250315), (20, 13000252), (40, 6500126), (80, 3250063)]