31657480

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^2\times {\mathrm{157}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 72706860

約数和(自身を除く): 41049380

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 157, 284, 314, 355, 568, 628, 710, 785, 1256, 1420, 1570, 2840, 3140, 5041, 6280, 10082, 11147, 20164, 22294, 25205, 40328, 44588, 50410, 55735, 89176, 100820, 111470, 201640, 222940, 445880, 791437, 1582874, 3165748, 3957185, 6331496, 7914370, 15828740, 31657480]

約数ペア:

[(1, 31657480), (2, 15828740), (4, 7914370), (5, 6331496), (8, 3957185), (10, 3165748), (20, 1582874), (40, 791437), (71, 445880), (142, 222940), (157, 201640), (284, 111470), (314, 100820), (355, 89176), (568, 55735), (628, 50410), (710, 44588), (785, 40328), (1256, 25205), (1420, 22294), (1570, 20164), (2840, 11147), (3140, 10082), (5041, 6280)]