20972523

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:160

約数の個数: 64

約数和(自身を含む): 36126720

約数和(自身を除く): 15154197

約数列:

[1, 3, 11, 13, 19, 31, 33, 39, 57, 83, 93, 143, 209, 247, 249, 341, 403, 429, 589, 627, 741, 913, 1023, 1079, 1209, 1577, 1767, 2573, 2717, 2739, 3237, 4433, 4731, 6479, 7657, 7719, 8151, 11869, 13299, 17347, 19437, 20501, 22971, 28303, 33449, 35607, 48887, 52041, 61503, 84227, 84909, 100347, 146661, 225511, 252681, 367939, 537757, 635531, 676533, 1103817, 1613271, 1906593, 6990841, 20972523]

約数ペア:

[(1, 20972523), (3, 6990841), (11, 1906593), (13, 1613271), (19, 1103817), (31, 676533), (33, 635531), (39, 537757), (57, 367939), (83, 252681), (93, 225511), (143, 146661), (209, 100347), (247, 84909), (249, 84227), (341, 61503), (403, 52041), (429, 48887), (589, 35607), (627, 33449), (741, 28303), (913, 22971), (1023, 20501), (1079, 19437), (1209, 17347), (1577, 13299), (1767, 11869), (2573, 8151), (2717, 7719), (2739, 7657), (3237, 6479), (4433, 4731)]