20521270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{919}}^1$

素因数の和:973

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 27171530

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 29, 35, 55, 58, 70, 77, 110, 145, 154, 203, 290, 319, 385, 406, 638, 770, 919, 1015, 1595, 1838, 2030, 2233, 3190, 4466, 4595, 6433, 9190, 10109, 11165, 12866, 20218, 22330, 26651, 32165, 50545, 53302, 64330, 70763, 101090, 133255, 141526, 186557, 266510, 293161, 353815, 373114, 586322, 707630, 932785, 1465805, 1865570, 2052127, 2931610, 4104254, 10260635, 20521270]

約数ペア:

[(1, 20521270), (2, 10260635), (5, 4104254), (7, 2931610), (10, 2052127), (11, 1865570), (14, 1465805), (22, 932785), (29, 707630), (35, 586322), (55, 373114), (58, 353815), (70, 293161), (77, 266510), (110, 186557), (145, 141526), (154, 133255), (203, 101090), (290, 70763), (319, 64330), (385, 53302), (406, 50545), (638, 32165), (770, 26651), (919, 22330), (1015, 20218), (1595, 12866), (1838, 11165), (2030, 10109), (2233, 9190), (3190, 6433), (4466, 4595)]