18797960

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6619}}^1$

素因数の和:6701

約数の個数: 32

約数和(自身を含む): 42897600

約数和(自身を除く): 24099640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 6619, 13238, 26476, 33095, 52952, 66190, 132380, 264760, 469949, 939898, 1879796, 2349745, 3759592, 4699490, 9398980, 18797960]

約数ペア:

[(1, 18797960), (2, 9398980), (4, 4699490), (5, 3759592), (8, 2349745), (10, 1879796), (20, 939898), (40, 469949), (71, 264760), (142, 132380), (284, 66190), (355, 52952), (568, 33095), (710, 26476), (1420, 13238), (2840, 6619)]