21105560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75377}}^1$

素因数の和:75395

約数の個数: 32

約数和(自身を含む): 54272160

約数和(自身を除く): 33166600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75377, 150754, 301508, 376885, 527639, 603016, 753770, 1055278, 1507540, 2110556, 2638195, 3015080, 4221112, 5276390, 10552780, 21105560]

約数ペア:

[(1, 21105560), (2, 10552780), (4, 5276390), (5, 4221112), (7, 3015080), (8, 2638195), (10, 2110556), (14, 1507540), (20, 1055278), (28, 753770), (35, 603016), (40, 527639), (56, 376885), (70, 301508), (140, 150754), (280, 75377)]