2139740

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1289}}^1$

素因数の和:1381

約数の個数: 24

約数和(自身を含む): 4551120

約数和(自身を除く): 2411380

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1289, 1660, 2578, 5156, 6445, 12890, 25780, 106987, 213974, 427948, 534935, 1069870, 2139740]

約数ペア:

[(1, 2139740), (2, 1069870), (4, 534935), (5, 427948), (10, 213974), (20, 106987), (83, 25780), (166, 12890), (332, 6445), (415, 5156), (830, 2578), (1289, 1660)]