20972556

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{251}}^1$

素因数の和:483

約数の個数: 72

約数和(自身を含む): 58339008

約数和(自身を除く): 37366452

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 211, 251, 396, 422, 502, 633, 753, 844, 1004, 1266, 1506, 1899, 2259, 2321, 2532, 2761, 3012, 3798, 4518, 4642, 5522, 6963, 7596, 8283, 9036, 9284, 11044, 13926, 16566, 20889, 24849, 27852, 33132, 41778, 49698, 52961, 83556, 99396, 105922, 158883, 211844, 317766, 476649, 582571, 635532, 953298, 1165142, 1747713, 1906596, 2330284, 3495426, 5243139, 6990852, 10486278, 20972556]

約数ペア:

[(1, 20972556), (2, 10486278), (3, 6990852), (4, 5243139), (6, 3495426), (9, 2330284), (11, 1906596), (12, 1747713), (18, 1165142), (22, 953298), (33, 635532), (36, 582571), (44, 476649), (66, 317766), (99, 211844), (132, 158883), (198, 105922), (211, 99396), (251, 83556), (396, 52961), (422, 49698), (502, 41778), (633, 33132), (753, 27852), (844, 24849), (1004, 20889), (1266, 16566), (1506, 13926), (1899, 11044), (2259, 9284), (2321, 9036), (2532, 8283), (2761, 7596), (3012, 6963), (3798, 5522), (4518, 4642)]