21000550

素因数分解:

$2^1\times 5^2\times {\mathrm{263}}^1\times {\mathrm{1597}}^1$

素因数の和:1872

約数の個数: 24

約数和(自身を含む): 39234096

約数和(自身を除く): 18233546

約数列:

[1, 2, 5, 10, 25, 50, 263, 526, 1315, 1597, 2630, 3194, 6575, 7985, 13150, 15970, 39925, 79850, 420011, 840022, 2100055, 4200110, 10500275, 21000550]

約数ペア:

[(1, 21000550), (2, 10500275), (5, 4200110), (10, 2100055), (25, 840022), (50, 420011), (263, 79850), (526, 39925), (1315, 15970), (1597, 13150), (2630, 7985), (3194, 6575)]