19291640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5419}}^1$

素因数の和:5519

約数の個数: 32

約数和(自身を含む): 43902000

約数和(自身を除く): 24610360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5419, 10838, 21676, 27095, 43352, 54190, 108380, 216760, 482291, 964582, 1929164, 2411455, 3858328, 4822910, 9645820, 19291640]

約数ペア:

[(1, 19291640), (2, 9645820), (4, 4822910), (5, 3858328), (8, 2411455), (10, 1929164), (20, 964582), (40, 482291), (89, 216760), (178, 108380), (356, 54190), (445, 43352), (712, 27095), (890, 21676), (1780, 10838), (3560, 5419)]