20798072

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 44193600

約数和(自身を除く): 23395528

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 61, 68, 92, 109, 122, 136, 184, 218, 244, 391, 436, 488, 782, 872, 1037, 1403, 1564, 1853, 2074, 2507, 2806, 3128, 3706, 4148, 5014, 5612, 6649, 7412, 8296, 10028, 11224, 13298, 14824, 20056, 23851, 26596, 42619, 47702, 53192, 85238, 95404, 113033, 152927, 170476, 190808, 226066, 305854, 340952, 452132, 611708, 904264, 1223416, 2599759, 5199518, 10399036, 20798072]

約数ペア:

[(1, 20798072), (2, 10399036), (4, 5199518), (8, 2599759), (17, 1223416), (23, 904264), (34, 611708), (46, 452132), (61, 340952), (68, 305854), (92, 226066), (109, 190808), (122, 170476), (136, 152927), (184, 113033), (218, 95404), (244, 85238), (391, 53192), (436, 47702), (488, 42619), (782, 26596), (872, 23851), (1037, 20056), (1403, 14824), (1564, 13298), (1853, 11224), (2074, 10028), (2507, 8296), (2806, 7412), (3128, 6649), (3706, 5612), (4148, 5014)]