71996840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{251}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 166561920

約数和(自身を除く): 94565080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 101, 142, 202, 251, 284, 355, 404, 502, 505, 568, 710, 808, 1004, 1010, 1255, 1420, 2008, 2020, 2510, 2840, 4040, 5020, 7171, 10040, 14342, 17821, 25351, 28684, 35642, 35855, 50702, 57368, 71284, 71710, 89105, 101404, 126755, 142568, 143420, 178210, 202808, 253510, 286840, 356420, 507020, 712840, 1014040, 1799921, 3599842, 7199684, 8999605, 14399368, 17999210, 35998420, 71996840]

約数ペア:

[(1, 71996840), (2, 35998420), (4, 17999210), (5, 14399368), (8, 8999605), (10, 7199684), (20, 3599842), (40, 1799921), (71, 1014040), (101, 712840), (142, 507020), (202, 356420), (251, 286840), (284, 253510), (355, 202808), (404, 178210), (502, 143420), (505, 142568), (568, 126755), (710, 101404), (808, 89105), (1004, 71710), (1010, 71284), (1255, 57368), (1420, 50702), (2008, 35855), (2020, 35642), (2510, 28684), (2840, 25351), (4040, 17821), (5020, 14342), (7171, 10040)]