21878450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{39779}}^1$

素因数の和:39802

約数の個数: 24

約数和(自身を含む): 44394480

約数和(自身を除く): 22516030

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 275, 550, 39779, 79558, 198895, 397790, 437569, 875138, 994475, 1988950, 2187845, 4375690, 10939225, 21878450]

約数ペア:

[(1, 21878450), (2, 10939225), (5, 4375690), (10, 2187845), (11, 1988950), (22, 994475), (25, 875138), (50, 437569), (55, 397790), (110, 198895), (275, 79558), (550, 39779)]