21479895

素因数分解:

$3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2423}}^1$

素因数の和:2631

約数の個数: 24

約数和(自身を含む): 37436256

約数和(自身を除く): 15956361

約数列:

[1, 3, 5, 9, 15, 45, 197, 591, 985, 1773, 2423, 2955, 7269, 8865, 12115, 21807, 36345, 109035, 477331, 1431993, 2386655, 4295979, 7159965, 21479895]

約数ペア:

[(1, 21479895), (3, 7159965), (5, 4295979), (9, 2386655), (15, 1431993), (45, 477331), (197, 109035), (591, 36345), (985, 21807), (1773, 12115), (2423, 8865), (2955, 7269)]