18816950

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:257

約数の個数: 48

約数和(自身を含む): 36653904

約数和(自身を除く): 17836954

約数列:

[1, 2, 5, 10, 25, 41, 50, 67, 82, 134, 137, 205, 274, 335, 410, 670, 685, 1025, 1370, 1675, 2050, 2747, 3350, 3425, 5494, 5617, 6850, 9179, 11234, 13735, 18358, 27470, 28085, 45895, 56170, 68675, 91790, 137350, 140425, 229475, 280850, 376339, 458950, 752678, 1881695, 3763390, 9408475, 18816950]

約数ペア:

[(1, 18816950), (2, 9408475), (5, 3763390), (10, 1881695), (25, 752678), (41, 458950), (50, 376339), (67, 280850), (82, 229475), (134, 140425), (137, 137350), (205, 91790), (274, 68675), (335, 56170), (410, 45895), (670, 28085), (685, 27470), (1025, 18358), (1370, 13735), (1675, 11234), (2050, 9179), (2747, 6850), (3350, 5617), (3425, 5494)]