21398204270

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{25780969}}^1$

素因数の和:25781059

約数の個数: 16

約数和(自身を含む): 38980826640

約数和(自身を除く): 17582622370

約数列:

[1, 2, 5, 10, 83, 166, 415, 830, 25780969, 51561938, 128904845, 257809690, 2139820427, 4279640854, 10699102135, 21398204270]

約数ペア:

[(1, 21398204270), (2, 10699102135), (5, 4279640854), (10, 2139820427), (83, 257809690), (166, 128904845), (415, 51561938), (830, 25780969)]