21356770

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{293}}^1$

素因数の和:534

約数の個数: 32

約数和(自身を含む): 39817008

約数和(自身を除く): 18460238

約数列:

[1, 2, 5, 10, 37, 74, 185, 197, 293, 370, 394, 586, 985, 1465, 1970, 2930, 7289, 10841, 14578, 21682, 36445, 54205, 57721, 72890, 108410, 115442, 288605, 577210, 2135677, 4271354, 10678385, 21356770]

約数ペア:

[(1, 21356770), (2, 10678385), (5, 4271354), (10, 2135677), (37, 577210), (74, 288605), (185, 115442), (197, 108410), (293, 72890), (370, 57721), (394, 54205), (586, 36445), (985, 21682), (1465, 14578), (1970, 10841), (2930, 7289)]