21403945

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{911}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 26615808

約数和(自身を除く): 5211863

約数列:

[1, 5, 37, 127, 185, 635, 911, 4555, 4699, 23495, 33707, 115697, 168535, 578485, 4280789, 21403945]

約数ペア:

[(1, 21403945), (5, 4280789), (37, 578485), (127, 168535), (185, 115697), (635, 33707), (911, 23495), (4555, 4699)]