20201192

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{509}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 42732900

約数和(自身を除く): 22531708

約数列:

[1, 2, 4, 8, 11, 22, 41, 44, 82, 88, 121, 164, 242, 328, 451, 484, 509, 902, 968, 1018, 1804, 2036, 3608, 4072, 4961, 5599, 9922, 11198, 19844, 20869, 22396, 39688, 41738, 44792, 61589, 83476, 123178, 166952, 229559, 246356, 459118, 492712, 918236, 1836472, 2525149, 5050298, 10100596, 20201192]

約数ペア:

[(1, 20201192), (2, 10100596), (4, 5050298), (8, 2525149), (11, 1836472), (22, 918236), (41, 492712), (44, 459118), (82, 246356), (88, 229559), (121, 166952), (164, 123178), (242, 83476), (328, 61589), (451, 44792), (484, 41738), (509, 39688), (902, 22396), (968, 20869), (1018, 19844), (1804, 11198), (2036, 9922), (3608, 5599), (4072, 4961)]