408069320

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{32803}}^1$

素因数の和:33125

約数の個数: 32

約数和(自身を含む): 921136320

約数和(自身を除く): 513067000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 12440, 32803, 65606, 131212, 164015, 262424, 328030, 656060, 1312120, 10201733, 20403466, 40806932, 51008665, 81613864, 102017330, 204034660, 408069320]

約数ペア:

[(1, 408069320), (2, 204034660), (4, 102017330), (5, 81613864), (8, 51008665), (10, 40806932), (20, 20403466), (40, 10201733), (311, 1312120), (622, 656060), (1244, 328030), (1555, 262424), (2488, 164015), (3110, 131212), (6220, 65606), (12440, 32803)]