20379788

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 43794240

約数和(自身を除く): 23414452

約数列:

[1, 2, 4, 11, 13, 22, 26, 41, 44, 52, 79, 82, 121, 143, 158, 164, 242, 286, 316, 451, 484, 533, 572, 869, 902, 1027, 1066, 1573, 1738, 1804, 2054, 2132, 3146, 3239, 3476, 4108, 4961, 5863, 6292, 6478, 9559, 9922, 11297, 11726, 12956, 19118, 19844, 22594, 23452, 35629, 38236, 42107, 45188, 64493, 71258, 84214, 124267, 128986, 142516, 168428, 248534, 257972, 391919, 463177, 497068, 783838, 926354, 1567676, 1852708, 5094947, 10189894, 20379788]

約数ペア:

[(1, 20379788), (2, 10189894), (4, 5094947), (11, 1852708), (13, 1567676), (22, 926354), (26, 783838), (41, 497068), (44, 463177), (52, 391919), (79, 257972), (82, 248534), (121, 168428), (143, 142516), (158, 128986), (164, 124267), (242, 84214), (286, 71258), (316, 64493), (451, 45188), (484, 42107), (533, 38236), (572, 35629), (869, 23452), (902, 22594), (1027, 19844), (1066, 19118), (1573, 12956), (1738, 11726), (1804, 11297), (2054, 9922), (2132, 9559), (3146, 6478), (3239, 6292), (3476, 5863), (4108, 4961)]