16857220

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{1279}}^1$

素因数の和:1947

約数の個数: 24

約数和(自身を含む): 35481600

約数和(自身を除く): 18624380

約数列:

[1, 2, 4, 5, 10, 20, 659, 1279, 1318, 2558, 2636, 3295, 5116, 6395, 6590, 12790, 13180, 25580, 842861, 1685722, 3371444, 4214305, 8428610, 16857220]

約数ペア:

[(1, 16857220), (2, 8428610), (4, 4214305), (5, 3371444), (10, 1685722), (20, 842861), (659, 25580), (1279, 13180), (1318, 12790), (2558, 6590), (2636, 6395), (3295, 5116)]