289968020

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{55127}}^1$

素因数の和:55399

約数の個数: 24

約数和(自身を含む): 611259264

約数和(自身を除く): 321291244

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 5260, 55127, 110254, 220508, 275635, 551270, 1102540, 14498401, 28996802, 57993604, 72492005, 144984010, 289968020]

約数ペア:

[(1, 289968020), (2, 144984010), (4, 72492005), (5, 57993604), (10, 28996802), (20, 14498401), (263, 1102540), (526, 551270), (1052, 275635), (1315, 220508), (2630, 110254), (5260, 55127)]