19884380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11171}}^1$

素因数の和:11269

約数の個数: 24

約数和(自身を含む): 42230160

約数和(自身を除く): 22345780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11171, 22342, 44684, 55855, 111710, 223420, 994219, 1988438, 3976876, 4971095, 9942190, 19884380]

約数ペア:

[(1, 19884380), (2, 9942190), (4, 4971095), (5, 3976876), (10, 1988438), (20, 994219), (89, 223420), (178, 111710), (356, 55855), (445, 44684), (890, 22342), (1780, 11171)]