20931562078

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{26921}}^1$

素因数の和:27065

約数の個数: 64

約数和(自身を含む): 39284582400

約数和(自身を除く): 18353020322

約数列:

[1, 2, 7, 14, 19, 37, 38, 74, 79, 133, 158, 259, 266, 518, 553, 703, 1106, 1406, 1501, 2923, 3002, 4921, 5846, 9842, 10507, 20461, 21014, 26921, 40922, 53842, 55537, 111074, 188447, 376894, 388759, 511499, 777518, 996077, 1022998, 1992154, 2126759, 3580493, 4253518, 6972539, 7160986, 13945078, 14887313, 18925463, 29774626, 37850926, 40408421, 78690083, 80816842, 132478241, 157380166, 264956482, 282858947, 550830581, 565717894, 1101661162, 1495111577, 2990223154, 10465781039, 20931562078]

約数ペア:

[(1, 20931562078), (2, 10465781039), (7, 2990223154), (14, 1495111577), (19, 1101661162), (37, 565717894), (38, 550830581), (74, 282858947), (79, 264956482), (133, 157380166), (158, 132478241), (259, 80816842), (266, 78690083), (518, 40408421), (553, 37850926), (703, 29774626), (1106, 18925463), (1406, 14887313), (1501, 13945078), (2923, 7160986), (3002, 6972539), (4921, 4253518), (5846, 3580493), (9842, 2126759), (10507, 1992154), (20461, 1022998), (21014, 996077), (26921, 777518), (40922, 511499), (53842, 388759), (55537, 376894), (111074, 188447)]