21268402

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{1109}}^1$

素因数の和:1377

約数の個数: 16

約数和(自身を含む): 32820480

約数和(自身を除く): 11552078

約数列:

[1, 2, 43, 86, 223, 446, 1109, 2218, 9589, 19178, 47687, 95374, 247307, 494614, 10634201, 21268402]

約数ペア:

[(1, 21268402), (2, 10634201), (43, 494614), (86, 247307), (223, 95374), (446, 47687), (1109, 19178), (2218, 9589)]