209916245

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 329864472

約数和(自身を除く): 119948227

約数列:

[1, 5, 7, 11, 35, 49, 55, 73, 77, 97, 121, 245, 365, 385, 485, 511, 539, 605, 679, 803, 847, 1067, 2555, 2695, 3395, 3577, 4015, 4235, 4753, 5335, 5621, 5929, 7081, 7469, 8833, 11737, 17885, 23765, 28105, 29645, 35405, 37345, 39347, 44165, 49567, 52283, 58685, 61831, 77891, 82159, 196735, 247835, 261415, 309155, 346969, 389455, 410795, 432817, 545237, 575113, 856801, 1734845, 2164085, 2726185, 2875565, 3816659, 4284005, 5997607, 19083295, 29988035, 41983249, 209916245]

約数ペア:

[(1, 209916245), (5, 41983249), (7, 29988035), (11, 19083295), (35, 5997607), (49, 4284005), (55, 3816659), (73, 2875565), (77, 2726185), (97, 2164085), (121, 1734845), (245, 856801), (365, 575113), (385, 545237), (485, 432817), (511, 410795), (539, 389455), (605, 346969), (679, 309155), (803, 261415), (847, 247835), (1067, 196735), (2555, 82159), (2695, 77891), (3395, 61831), (3577, 58685), (4015, 52283), (4235, 49567), (4753, 44165), (5335, 39347), (5621, 37345), (5929, 35405), (7081, 29645), (7469, 28105), (8833, 23765), (11737, 17885)]