978025540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{857}}^1\times {\mathrm{1327}}^1$

素因数の和:2236

約数の個数: 48

約数和(自身を含む): 2105655552

約数和(自身を除く): 1127630012

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 857, 860, 1327, 1714, 2654, 3428, 4285, 5308, 6635, 8570, 13270, 17140, 26540, 36851, 57061, 73702, 114122, 147404, 184255, 228244, 285305, 368510, 570610, 737020, 1137239, 1141220, 2274478, 4548956, 5686195, 11372390, 22744780, 48901277, 97802554, 195605108, 244506385, 489012770, 978025540]

約数ペア:

[(1, 978025540), (2, 489012770), (4, 244506385), (5, 195605108), (10, 97802554), (20, 48901277), (43, 22744780), (86, 11372390), (172, 5686195), (215, 4548956), (430, 2274478), (857, 1141220), (860, 1137239), (1327, 737020), (1714, 570610), (2654, 368510), (3428, 285305), (4285, 228244), (5308, 184255), (6635, 147404), (8570, 114122), (13270, 73702), (17140, 57061), (26540, 36851)]