51428780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197803}}^1$

素因数の和:197825

約数の個数: 24

約数和(自身を含む): 116308752

約数和(自身を除く): 64879972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 197803, 395606, 791212, 989015, 1978030, 2571439, 3956060, 5142878, 10285756, 12857195, 25714390, 51428780]

約数ペア:

[(1, 51428780), (2, 25714390), (4, 12857195), (5, 10285756), (10, 5142878), (13, 3956060), (20, 2571439), (26, 1978030), (52, 989015), (65, 791212), (130, 395606), (260, 197803)]