21206870

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{45121}}^1$

素因数の和:45175

約数の個数: 16

約数和(自身を含む): 38985408

約数和(自身を除く): 17778538

約数列:

[1, 2, 5, 10, 47, 94, 235, 470, 45121, 90242, 225605, 451210, 2120687, 4241374, 10603435, 21206870]

約数ペア:

[(1, 21206870), (2, 10603435), (5, 4241374), (10, 2120687), (47, 451210), (94, 225605), (235, 90242), (470, 45121)]