21056421

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{4639}}^1$

素因数の和:4748

約数の個数: 16

約数和(自身を含む): 30067200

約数和(自身を除く): 9010779

約数列:

[1, 3, 17, 51, 89, 267, 1513, 4539, 4639, 13917, 78863, 236589, 412871, 1238613, 7018807, 21056421]

約数ペア:

[(1, 21056421), (3, 7018807), (17, 1238613), (51, 412871), (89, 236589), (267, 78863), (1513, 13917), (4539, 4639)]