841940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 1995840

約数和(自身を除く): 1153900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 89, 110, 172, 178, 215, 220, 356, 430, 445, 473, 860, 890, 946, 979, 1780, 1892, 1958, 2365, 3827, 3916, 4730, 4895, 7654, 9460, 9790, 15308, 19135, 19580, 38270, 42097, 76540, 84194, 168388, 210485, 420970, 841940]

約数ペア:

[(1, 841940), (2, 420970), (4, 210485), (5, 168388), (10, 84194), (11, 76540), (20, 42097), (22, 38270), (43, 19580), (44, 19135), (55, 15308), (86, 9790), (89, 9460), (110, 7654), (172, 4895), (178, 4730), (215, 3916), (220, 3827), (356, 2365), (430, 1958), (445, 1892), (473, 1780), (860, 979), (890, 946)]