20215206

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{193}}^1$

素因数の和:258

約数の個数: 72

約数和(自身を含む): 50207976

約数和(自身を除く): 29992770

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 23, 33, 46, 66, 69, 99, 138, 193, 198, 207, 253, 386, 414, 506, 529, 579, 759, 1058, 1158, 1518, 1587, 1737, 2123, 2277, 3174, 3474, 4246, 4439, 4554, 4761, 5819, 6369, 8878, 9522, 11638, 12738, 13317, 17457, 19107, 26634, 34914, 38214, 39951, 48829, 52371, 79902, 97658, 102097, 104742, 146487, 204194, 292974, 306291, 439461, 612582, 878922, 918873, 1123067, 1837746, 2246134, 3369201, 6738402, 10107603, 20215206]

約数ペア:

[(1, 20215206), (2, 10107603), (3, 6738402), (6, 3369201), (9, 2246134), (11, 1837746), (18, 1123067), (22, 918873), (23, 878922), (33, 612582), (46, 439461), (66, 306291), (69, 292974), (99, 204194), (138, 146487), (193, 104742), (198, 102097), (207, 97658), (253, 79902), (386, 52371), (414, 48829), (506, 39951), (529, 38214), (579, 34914), (759, 26634), (1058, 19107), (1158, 17457), (1518, 13317), (1587, 12738), (1737, 11638), (2123, 9522), (2277, 8878), (3174, 6369), (3474, 5819), (4246, 4761), (4439, 4554)]