21401330

素因数分解:

$2^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{4831}}^1$

素因数の和:5281

約数の個数: 16

約数和(自身を含む): 38617344

約数和(自身を除く): 17216014

約数列:

[1, 2, 5, 10, 443, 886, 2215, 4430, 4831, 9662, 24155, 48310, 2140133, 4280266, 10700665, 21401330]

約数ペア:

[(1, 21401330), (2, 10700665), (5, 4280266), (10, 2140133), (443, 48310), (886, 24155), (2215, 9662), (4430, 4831)]