81365240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{16811}}^1$

素因数の和:16844

約数の個数: 48

約数和(自身を含む): 201239640

約数和(自身を除く): 119874400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 16811, 33622, 67244, 84055, 134488, 168110, 184921, 336220, 369842, 672440, 739684, 924605, 1479368, 1849210, 2034131, 3698420, 4068262, 7396840, 8136524, 10170655, 16273048, 20341310, 40682620, 81365240]

約数ペア:

[(1, 81365240), (2, 40682620), (4, 20341310), (5, 16273048), (8, 10170655), (10, 8136524), (11, 7396840), (20, 4068262), (22, 3698420), (40, 2034131), (44, 1849210), (55, 1479368), (88, 924605), (110, 739684), (121, 672440), (220, 369842), (242, 336220), (440, 184921), (484, 168110), (605, 134488), (968, 84055), (1210, 67244), (2420, 33622), (4840, 16811)]