21005236

素因数分解:

$2^2\times 7^1\times {\mathrm{757}}^1\times {\mathrm{991}}^1$

素因数の和:1759

約数の個数: 24

約数和(自身を含む): 42108416

約数和(自身を除く): 21103180

約数列:

[1, 2, 4, 7, 14, 28, 757, 991, 1514, 1982, 3028, 3964, 5299, 6937, 10598, 13874, 21196, 27748, 750187, 1500374, 3000748, 5251309, 10502618, 21005236]

約数ペア:

[(1, 21005236), (2, 10502618), (4, 5251309), (7, 3000748), (14, 1500374), (28, 750187), (757, 27748), (991, 21196), (1514, 13874), (1982, 10598), (3028, 6937), (3964, 5299)]