20215548892

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{138763}}^1$

素因数の和:138839

約数の個数: 72

約数和(自身を含む): 45474627968

約数和(自身を除く): 25259079076

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 43, 44, 77, 86, 121, 154, 172, 242, 301, 308, 473, 484, 602, 847, 946, 1204, 1694, 1892, 3311, 3388, 5203, 6622, 10406, 13244, 20812, 36421, 72842, 138763, 145684, 277526, 555052, 971341, 1526393, 1942682, 3052786, 3885364, 5966809, 6105572, 10684751, 11933618, 16790323, 21369502, 23867236, 33580646, 41767663, 42739004, 65634899, 67161292, 83535326, 117532261, 131269798, 167070652, 235064522, 262539596, 459444293, 470129044, 721983889, 918888586, 1443967778, 1837777172, 2887935556, 5053887223, 10107774446, 20215548892]

約数ペア:

[(1, 20215548892), (2, 10107774446), (4, 5053887223), (7, 2887935556), (11, 1837777172), (14, 1443967778), (22, 918888586), (28, 721983889), (43, 470129044), (44, 459444293), (77, 262539596), (86, 235064522), (121, 167070652), (154, 131269798), (172, 117532261), (242, 83535326), (301, 67161292), (308, 65634899), (473, 42739004), (484, 41767663), (602, 33580646), (847, 23867236), (946, 21369502), (1204, 16790323), (1694, 11933618), (1892, 10684751), (3311, 6105572), (3388, 5966809), (5203, 3885364), (6622, 3052786), (10406, 1942682), (13244, 1526393), (20812, 971341), (36421, 555052), (72842, 277526), (138763, 145684)]