81496240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{269}}^1\times {\mathrm{541}}^1$

素因数の和:830

約数の個数: 80

約数和(自身を含む): 217753920

約数和(自身を除く): 136257680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 269, 280, 538, 541, 560, 1076, 1082, 1345, 1883, 2152, 2164, 2690, 2705, 3766, 3787, 4304, 4328, 5380, 5410, 7532, 7574, 8656, 9415, 10760, 10820, 15064, 15148, 18830, 18935, 21520, 21640, 30128, 30296, 37660, 37870, 43280, 60592, 75320, 75740, 145529, 150640, 151480, 291058, 302960, 582116, 727645, 1018703, 1164232, 1455290, 2037406, 2328464, 2910580, 4074812, 5093515, 5821160, 8149624, 10187030, 11642320, 16299248, 20374060, 40748120, 81496240]

約数ペア:

[(1, 81496240), (2, 40748120), (4, 20374060), (5, 16299248), (7, 11642320), (8, 10187030), (10, 8149624), (14, 5821160), (16, 5093515), (20, 4074812), (28, 2910580), (35, 2328464), (40, 2037406), (56, 1455290), (70, 1164232), (80, 1018703), (112, 727645), (140, 582116), (269, 302960), (280, 291058), (538, 151480), (541, 150640), (560, 145529), (1076, 75740), (1082, 75320), (1345, 60592), (1883, 43280), (2152, 37870), (2164, 37660), (2690, 30296), (2705, 30128), (3766, 21640), (3787, 21520), (4304, 18935), (4328, 18830), (5380, 15148), (5410, 15064), (7532, 10820), (7574, 10760), (8656, 9415)]