21081400

素因数分解:

$2^3\times 5^2\times {\mathrm{105407}}^1$

素因数の和:105423

約数の個数: 24

約数和(自身を含む): 49014720

約数和(自身を除く): 27933320

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 105407, 210814, 421628, 527035, 843256, 1054070, 2108140, 2635175, 4216280, 5270350, 10540700, 21081400]

約数ペア:

[(1, 21081400), (2, 10540700), (4, 5270350), (5, 4216280), (8, 2635175), (10, 2108140), (20, 1054070), (25, 843256), (40, 527035), (50, 421628), (100, 210814), (200, 105407)]