123390520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{1621}}^1$

素因数の和:1816

約数の個数: 64

約数和(自身を含む): 304806240

約数和(自身を除く): 181415720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 173, 220, 346, 440, 692, 865, 1384, 1621, 1730, 1903, 3242, 3460, 3806, 6484, 6920, 7612, 8105, 9515, 12968, 15224, 16210, 17831, 19030, 32420, 35662, 38060, 64840, 71324, 76120, 89155, 142648, 178310, 280433, 356620, 560866, 713240, 1121732, 1402165, 2243464, 2804330, 3084763, 5608660, 6169526, 11217320, 12339052, 15423815, 24678104, 30847630, 61695260, 123390520]

約数ペア:

[(1, 123390520), (2, 61695260), (4, 30847630), (5, 24678104), (8, 15423815), (10, 12339052), (11, 11217320), (20, 6169526), (22, 5608660), (40, 3084763), (44, 2804330), (55, 2243464), (88, 1402165), (110, 1121732), (173, 713240), (220, 560866), (346, 356620), (440, 280433), (692, 178310), (865, 142648), (1384, 89155), (1621, 76120), (1730, 71324), (1903, 64840), (3242, 38060), (3460, 35662), (3806, 32420), (6484, 19030), (6920, 17831), (7612, 16210), (8105, 15224), (9515, 12968)]