15828740

素因数分解:

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

素因数の和:308

約数の個数: 36

約数和(自身を含む): 33929868

約数和(自身を除く): 18101128

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 157, 284, 314, 355, 628, 710, 785, 1420, 1570, 3140, 5041, 10082, 11147, 20164, 22294, 25205, 44588, 50410, 55735, 100820, 111470, 222940, 791437, 1582874, 3165748, 3957185, 7914370, 15828740]

約数ペア:

[(1, 15828740), (2, 7914370), (4, 3957185), (5, 3165748), (10, 1582874), (20, 791437), (71, 222940), (142, 111470), (157, 100820), (284, 55735), (314, 50410), (355, 44588), (628, 25205), (710, 22294), (785, 20164), (1420, 11147), (1570, 10082), (3140, 5041)]