15656840

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{769}}^1$

素因数の和:1289

約数の個数: 32

約数和(自身を含む): 35343000

約数和(自身を除く): 19686160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 769, 1018, 1538, 2036, 2545, 3076, 3845, 4072, 5090, 6152, 7690, 10180, 15380, 20360, 30760, 391421, 782842, 1565684, 1957105, 3131368, 3914210, 7828420, 15656840]

約数ペア:

[(1, 15656840), (2, 7828420), (4, 3914210), (5, 3131368), (8, 1957105), (10, 1565684), (20, 782842), (40, 391421), (509, 30760), (769, 20360), (1018, 15380), (1538, 10180), (2036, 7690), (2545, 6152), (3076, 5090), (3845, 4072)]