253756840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:730

約数の個数: 64

約数和(自身を含む): 583200000

約数和(自身を除く): 329443160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 199, 284, 355, 398, 449, 568, 710, 796, 898, 995, 1420, 1592, 1796, 1990, 2245, 2840, 3592, 3980, 4490, 7960, 8980, 14129, 17960, 28258, 31879, 56516, 63758, 70645, 89351, 113032, 127516, 141290, 159395, 178702, 255032, 282580, 318790, 357404, 446755, 565160, 637580, 714808, 893510, 1275160, 1787020, 3574040, 6343921, 12687842, 25375684, 31719605, 50751368, 63439210, 126878420, 253756840]

約数ペア:

[(1, 253756840), (2, 126878420), (4, 63439210), (5, 50751368), (8, 31719605), (10, 25375684), (20, 12687842), (40, 6343921), (71, 3574040), (142, 1787020), (199, 1275160), (284, 893510), (355, 714808), (398, 637580), (449, 565160), (568, 446755), (710, 357404), (796, 318790), (898, 282580), (995, 255032), (1420, 178702), (1592, 159395), (1796, 141290), (1990, 127516), (2245, 113032), (2840, 89351), (3592, 70645), (3980, 63758), (4490, 56516), (7960, 31879), (8980, 28258), (14129, 17960)]