7781320

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{4139}}^1$

素因数の和:4197

約数の個数: 32

約数和(自身を含む): 17884800

約数和(自身を除く): 10103480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 4139, 8278, 16556, 20695, 33112, 41390, 82780, 165560, 194533, 389066, 778132, 972665, 1556264, 1945330, 3890660, 7781320]

約数ペア:

[(1, 7781320), (2, 3890660), (4, 1945330), (5, 1556264), (8, 972665), (10, 778132), (20, 389066), (40, 194533), (47, 165560), (94, 82780), (188, 41390), (235, 33112), (376, 20695), (470, 16556), (940, 8278), (1880, 4139)]