18850660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{439}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 42134400

約数和(自身を除く): 23283740

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 113, 190, 226, 380, 439, 452, 565, 878, 1130, 1756, 2147, 2195, 2260, 4294, 4390, 8341, 8588, 8780, 10735, 16682, 21470, 33364, 41705, 42940, 49607, 83410, 99214, 166820, 198428, 248035, 496070, 942533, 992140, 1885066, 3770132, 4712665, 9425330, 18850660]

約数ペア:

[(1, 18850660), (2, 9425330), (4, 4712665), (5, 3770132), (10, 1885066), (19, 992140), (20, 942533), (38, 496070), (76, 248035), (95, 198428), (113, 166820), (190, 99214), (226, 83410), (380, 49607), (439, 42940), (452, 41705), (565, 33364), (878, 21470), (1130, 16682), (1756, 10735), (2147, 8780), (2195, 8588), (2260, 8341), (4294, 4390)]