18915560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27817}}^1$

素因数の和:27845

約数の個数: 32

約数和(自身を含む): 45065160

約数和(自身を除く): 26149600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 27817, 55634, 111268, 139085, 222536, 278170, 472889, 556340, 945778, 1112680, 1891556, 2364445, 3783112, 4728890, 9457780, 18915560]

約数ペア:

[(1, 18915560), (2, 9457780), (4, 4728890), (5, 3783112), (8, 2364445), (10, 1891556), (17, 1112680), (20, 945778), (34, 556340), (40, 472889), (68, 278170), (85, 222536), (136, 139085), (170, 111268), (340, 55634), (680, 27817)]