19284520

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5417}}^1$

素因数の和:5517

約数の個数: 32

約数和(自身を含む): 43885800

約数和(自身を除く): 24601280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5417, 10834, 21668, 27085, 43336, 54170, 108340, 216680, 482113, 964226, 1928452, 2410565, 3856904, 4821130, 9642260, 19284520]

約数ペア:

[(1, 19284520), (2, 9642260), (4, 4821130), (5, 3856904), (8, 2410565), (10, 1928452), (20, 964226), (40, 482113), (89, 216680), (178, 108340), (356, 54170), (445, 43336), (712, 27085), (890, 21668), (1780, 10834), (3560, 5417)]