65384840

素因数分解:

$2^3\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{1601}}^1$

素因数の和:2633

約数の個数: 32

約数和(自身を含む): 147351960

約数和(自身を除く): 81967120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1021, 1601, 2042, 3202, 4084, 5105, 6404, 8005, 8168, 10210, 12808, 16010, 20420, 32020, 40840, 64040, 1634621, 3269242, 6538484, 8173105, 13076968, 16346210, 32692420, 65384840]

約数ペア:

[(1, 65384840), (2, 32692420), (4, 16346210), (5, 13076968), (8, 8173105), (10, 6538484), (20, 3269242), (40, 1634621), (1021, 64040), (1601, 40840), (2042, 32020), (3202, 20420), (4084, 16010), (5105, 12808), (6404, 10210), (8005, 8168)]