81042560

素因数分解:

$2^7\times 5^1\times {\mathrm{139}}^1\times {\mathrm{911}}^1$

素因数の和:1069

約数の個数: 64

約数和(自身を含む): 195350400

約数和(自身を除く): 114307840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 278, 320, 556, 640, 695, 911, 1112, 1390, 1822, 2224, 2780, 3644, 4448, 4555, 5560, 7288, 8896, 9110, 11120, 14576, 17792, 18220, 22240, 29152, 36440, 44480, 58304, 72880, 88960, 116608, 126629, 145760, 253258, 291520, 506516, 583040, 633145, 1013032, 1266290, 2026064, 2532580, 4052128, 5065160, 8104256, 10130320, 16208512, 20260640, 40521280, 81042560]

約数ペア:

[(1, 81042560), (2, 40521280), (4, 20260640), (5, 16208512), (8, 10130320), (10, 8104256), (16, 5065160), (20, 4052128), (32, 2532580), (40, 2026064), (64, 1266290), (80, 1013032), (128, 633145), (139, 583040), (160, 506516), (278, 291520), (320, 253258), (556, 145760), (640, 126629), (695, 116608), (911, 88960), (1112, 72880), (1390, 58304), (1822, 44480), (2224, 36440), (2780, 29152), (3644, 22240), (4448, 18220), (4555, 17792), (5560, 14576), (7288, 11120), (8896, 9110)]