8991620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1777}}^1$

素因数の和:1820

約数の個数: 48

約数和(自身を含む): 21506688

約数和(自身を除く): 12515068

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 1777, 2530, 3554, 5060, 7108, 8885, 17770, 19547, 35540, 39094, 40871, 78188, 81742, 97735, 163484, 195470, 204355, 390940, 408710, 449581, 817420, 899162, 1798324, 2247905, 4495810, 8991620]

約数ペア:

[(1, 8991620), (2, 4495810), (4, 2247905), (5, 1798324), (10, 899162), (11, 817420), (20, 449581), (22, 408710), (23, 390940), (44, 204355), (46, 195470), (55, 163484), (92, 97735), (110, 81742), (115, 78188), (220, 40871), (230, 39094), (253, 35540), (460, 19547), (506, 17770), (1012, 8885), (1265, 7108), (1777, 5060), (2530, 3554)]