20564726

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{313}}^1$

素因数の和:373

約数の個数: 48

約数和(自身を含む): 40197024

約数和(自身を除く): 19632298

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 91, 133, 182, 247, 266, 313, 361, 494, 626, 722, 1729, 2191, 2527, 3458, 4069, 4382, 4693, 5054, 5947, 8138, 9386, 11894, 28483, 32851, 41629, 56966, 65702, 77311, 83258, 112993, 154622, 225986, 541177, 790951, 1082354, 1468909, 1581902, 2937818, 10282363, 20564726]

約数ペア:

[(1, 20564726), (2, 10282363), (7, 2937818), (13, 1581902), (14, 1468909), (19, 1082354), (26, 790951), (38, 541177), (91, 225986), (133, 154622), (182, 112993), (247, 83258), (266, 77311), (313, 65702), (361, 56966), (494, 41629), (626, 32851), (722, 28483), (1729, 11894), (2191, 9386), (2527, 8138), (3458, 5947), (4069, 5054), (4382, 4693)]