1812040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 4131000

約数和(自身を除く): 2318960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 509, 712, 890, 1018, 1780, 2036, 2545, 3560, 4072, 5090, 10180, 20360, 45301, 90602, 181204, 226505, 362408, 453010, 906020, 1812040]

約数ペア:

[(1, 1812040), (2, 906020), (4, 453010), (5, 362408), (8, 226505), (10, 181204), (20, 90602), (40, 45301), (89, 20360), (178, 10180), (356, 5090), (445, 4072), (509, 3560), (712, 2545), (890, 2036), (1018, 1780)]