19485880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11329}}^1$

素因数の和:11383

約数の個数: 32

約数和(自身を含む): 44866800

約数和(自身を除く): 25380920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11329, 22658, 45316, 56645, 90632, 113290, 226580, 453160, 487147, 974294, 1948588, 2435735, 3897176, 4871470, 9742940, 19485880]

約数ペア:

[(1, 19485880), (2, 9742940), (4, 4871470), (5, 3897176), (8, 2435735), (10, 1948588), (20, 974294), (40, 487147), (43, 453160), (86, 226580), (172, 113290), (215, 90632), (344, 56645), (430, 45316), (860, 22658), (1720, 11329)]