1311342020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1\times {\mathrm{1663}}^1$

素因数の和:2204

約数の個数: 48

約数和(自身を含む): 2792724480

約数和(自身を除く): 1481382460

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 443, 445, 886, 890, 1663, 1772, 1780, 2215, 3326, 4430, 6652, 8315, 8860, 16630, 33260, 39427, 78854, 148007, 157708, 197135, 296014, 394270, 592028, 736709, 740035, 788540, 1473418, 1480070, 2946836, 2960140, 3683545, 7367090, 14734180, 65567101, 131134202, 262268404, 327835505, 655671010, 1311342020]

約数ペア:

[(1, 1311342020), (2, 655671010), (4, 327835505), (5, 262268404), (10, 131134202), (20, 65567101), (89, 14734180), (178, 7367090), (356, 3683545), (443, 2960140), (445, 2946836), (886, 1480070), (890, 1473418), (1663, 788540), (1772, 740035), (1780, 736709), (2215, 592028), (3326, 394270), (4430, 296014), (6652, 197135), (8315, 157708), (8860, 148007), (16630, 78854), (33260, 39427)]