21311050

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4789}}^1$

素因数の和:4890

約数の個数: 24

約数和(自身を含む): 40092300

約数和(自身を除く): 18781250

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4450, 4789, 9578, 23945, 47890, 119725, 239450, 426221, 852442, 2131105, 4262210, 10655525, 21311050]

約数ペア:

[(1, 21311050), (2, 10655525), (5, 4262210), (10, 2131105), (25, 852442), (50, 426221), (89, 239450), (178, 119725), (445, 47890), (890, 23945), (2225, 9578), (4450, 4789)]