20867830

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{23447}}^1$

素因数の和:23543

約数の個数: 16

約数和(自身を含む): 37985760

約数和(自身を除く): 17117930

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 23447, 46894, 117235, 234470, 2086783, 4173566, 10433915, 20867830]

約数ペア:

[(1, 20867830), (2, 10433915), (5, 4173566), (10, 2086783), (89, 234470), (178, 117235), (445, 46894), (890, 23447)]