389435140

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{55793}}^1$

素因数の和:56151

約数の個数: 24

約数和(自身を含む): 820171800

約数和(自身を除く): 430736660

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 6980, 55793, 111586, 223172, 278965, 557930, 1115860, 19471757, 38943514, 77887028, 97358785, 194717570, 389435140]

約数ペア:

[(1, 389435140), (2, 194717570), (4, 97358785), (5, 77887028), (10, 38943514), (20, 19471757), (349, 1115860), (698, 557930), (1396, 278965), (1745, 223172), (3490, 111586), (6980, 55793)]