221006885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 328458240

約数和(自身を除く): 107451355

約数列:

[1, 5, 11, 17, 23, 43, 55, 85, 115, 187, 215, 239, 253, 391, 473, 731, 935, 989, 1195, 1265, 1955, 2365, 2629, 3655, 4063, 4301, 4945, 5497, 8041, 10277, 10879, 13145, 16813, 20315, 21505, 27485, 40205, 44693, 51385, 54395, 60467, 84065, 93449, 113047, 174709, 184943, 223465, 236371, 302335, 467245, 565235, 873545, 924715, 1027939, 1181855, 1921799, 2600081, 4018307, 5139695, 9608995, 13000405, 20091535, 44201377, 221006885]

約数ペア:

[(1, 221006885), (5, 44201377), (11, 20091535), (17, 13000405), (23, 9608995), (43, 5139695), (55, 4018307), (85, 2600081), (115, 1921799), (187, 1181855), (215, 1027939), (239, 924715), (253, 873545), (391, 565235), (473, 467245), (731, 302335), (935, 236371), (989, 223465), (1195, 184943), (1265, 174709), (1955, 113047), (2365, 93449), (2629, 84065), (3655, 60467), (4063, 54395), (4301, 51385), (4945, 44693), (5497, 40205), (8041, 27485), (10277, 21505), (10879, 20315), (13145, 16813)]