21038030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161831}}^1$

素因数の和:161851

約数の個数: 16

約数和(自身を含む): 40781664

約数和(自身を除く): 19743634

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161831, 323662, 809155, 1618310, 2103803, 4207606, 10519015, 21038030]

約数ペア:

[(1, 21038030), (2, 10519015), (5, 4207606), (10, 2103803), (13, 1618310), (26, 809155), (65, 323662), (130, 161831)]