1278040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 2916000

約数和(自身を除く): 1637960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 359, 445, 712, 718, 890, 1436, 1780, 1795, 2872, 3560, 3590, 7180, 14360, 31951, 63902, 127804, 159755, 255608, 319510, 639020, 1278040]

約数ペア:

[(1, 1278040), (2, 639020), (4, 319510), (5, 255608), (8, 159755), (10, 127804), (20, 63902), (40, 31951), (89, 14360), (178, 7180), (356, 3590), (359, 3560), (445, 2872), (712, 1795), (718, 1780), (890, 1436)]