906020

素因数分解:

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

素因数の和:607

約数の個数: 24

約数和(自身を含む): 1927800

約数和(自身を除く): 1021780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 509, 890, 1018, 1780, 2036, 2545, 5090, 10180, 45301, 90602, 181204, 226505, 453010, 906020]

約数ペア:

[(1, 906020), (2, 453010), (4, 226505), (5, 181204), (10, 90602), (20, 45301), (89, 10180), (178, 5090), (356, 2545), (445, 2036), (509, 1780), (890, 1018)]