61255640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{911}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 141423840

約数和(自身を除く): 80168200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 911, 1640, 1681, 1822, 3362, 3644, 4555, 6724, 7288, 8405, 9110, 13448, 16810, 18220, 33620, 36440, 37351, 67240, 74702, 149404, 186755, 298808, 373510, 747020, 1494040, 1531391, 3062782, 6125564, 7656955, 12251128, 15313910, 30627820, 61255640]

約数ペア:

[(1, 61255640), (2, 30627820), (4, 15313910), (5, 12251128), (8, 7656955), (10, 6125564), (20, 3062782), (40, 1531391), (41, 1494040), (82, 747020), (164, 373510), (205, 298808), (328, 186755), (410, 149404), (820, 74702), (911, 67240), (1640, 37351), (1681, 36440), (1822, 33620), (3362, 18220), (3644, 16810), (4555, 13448), (6724, 9110), (7288, 8405)]