129640400

素因数分解:

$2^4\times 5^2\times {\mathrm{324101}}^1$

素因数の和:324119

約数の個数: 30

約数和(自身を含む): 311462022

約数和(自身を除く): 181821622

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 324101, 648202, 1296404, 1620505, 2592808, 3241010, 5185616, 6482020, 8102525, 12964040, 16205050, 25928080, 32410100, 64820200, 129640400]

約数ペア:

[(1, 129640400), (2, 64820200), (4, 32410100), (5, 25928080), (8, 16205050), (10, 12964040), (16, 8102525), (20, 6482020), (25, 5185616), (40, 3241010), (50, 2592808), (80, 1620505), (100, 1296404), (200, 648202), (400, 324101)]