64869740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249499}}^1$

素因数の和:249521

約数の個数: 24

約数和(自身を含む): 146706000

約数和(自身を除く): 81836260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 249499, 498998, 997996, 1247495, 2494990, 3243487, 4989980, 6486974, 12973948, 16217435, 32434870, 64869740]

約数ペア:

[(1, 64869740), (2, 32434870), (4, 16217435), (5, 12973948), (10, 6486974), (13, 4989980), (20, 3243487), (26, 2494990), (52, 1247495), (65, 997996), (130, 498998), (260, 249499)]