21063750

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:203

約数の個数: 80

約数和(自身を含む): 54320112

約数和(自身を除く): 33256362

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 41, 50, 75, 82, 123, 125, 137, 150, 205, 246, 250, 274, 375, 410, 411, 615, 625, 685, 750, 822, 1025, 1230, 1250, 1370, 1875, 2050, 2055, 3075, 3425, 3750, 4110, 5125, 5617, 6150, 6850, 10250, 10275, 11234, 15375, 16851, 17125, 20550, 25625, 28085, 30750, 33702, 34250, 51250, 51375, 56170, 76875, 84255, 85625, 102750, 140425, 153750, 168510, 171250, 256875, 280850, 421275, 513750, 702125, 842550, 1404250, 2106375, 3510625, 4212750, 7021250, 10531875, 21063750]

約数ペア:

[(1, 21063750), (2, 10531875), (3, 7021250), (5, 4212750), (6, 3510625), (10, 2106375), (15, 1404250), (25, 842550), (30, 702125), (41, 513750), (50, 421275), (75, 280850), (82, 256875), (123, 171250), (125, 168510), (137, 153750), (150, 140425), (205, 102750), (246, 85625), (250, 84255), (274, 76875), (375, 56170), (410, 51375), (411, 51250), (615, 34250), (625, 33702), (685, 30750), (750, 28085), (822, 25625), (1025, 20550), (1230, 17125), (1250, 16851), (1370, 15375), (1875, 11234), (2050, 10275), (2055, 10250), (3075, 6850), (3425, 6150), (3750, 5617), (4110, 5125)]