18901580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{49741}}^1$

素因数の和:49769

約数の個数: 24

約数和(自身を含む): 41783280

約数和(自身を除く): 22881700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 49741, 99482, 198964, 248705, 497410, 945079, 994820, 1890158, 3780316, 4725395, 9450790, 18901580]

約数ペア:

[(1, 18901580), (2, 9450790), (4, 4725395), (5, 3780316), (10, 1890158), (19, 994820), (20, 945079), (38, 497410), (76, 248705), (95, 198964), (190, 99482), (380, 49741)]