21158745

素因数分解:

$3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{9467}}^1$

素因数の和:9624

約数の個数: 16

約数和(自身を含む): 34084800

約数和(自身を除く): 12926055

約数列:

[1, 3, 5, 15, 149, 447, 745, 2235, 9467, 28401, 47335, 142005, 1410583, 4231749, 7052915, 21158745]

約数ペア:

[(1, 21158745), (3, 7052915), (5, 4231749), (15, 1410583), (149, 142005), (447, 47335), (745, 28401), (2235, 9467)]