64155020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{857}}^1$

素因数の和:1082

約数の個数: 48

約数和(自身を含む): 142702560

約数和(自身を除く): 78547540

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 197, 380, 394, 788, 857, 985, 1714, 1970, 3428, 3743, 3940, 4285, 7486, 8570, 14972, 16283, 17140, 18715, 32566, 37430, 65132, 74860, 81415, 162830, 168829, 325660, 337658, 675316, 844145, 1688290, 3207751, 3376580, 6415502, 12831004, 16038755, 32077510, 64155020]

約数ペア:

[(1, 64155020), (2, 32077510), (4, 16038755), (5, 12831004), (10, 6415502), (19, 3376580), (20, 3207751), (38, 1688290), (76, 844145), (95, 675316), (190, 337658), (197, 325660), (380, 168829), (394, 162830), (788, 81415), (857, 74860), (985, 65132), (1714, 37430), (1970, 32566), (3428, 18715), (3743, 17140), (3940, 16283), (4285, 14972), (7486, 8570)]