20996856188

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{497603}}^1$

素因数の和:497762

約数の個数: 48

約数和(自身を含む): 46145804544

約数和(自身を除く): 25148948356

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 137, 154, 274, 308, 548, 959, 1507, 1918, 3014, 3836, 6028, 10549, 21098, 42196, 497603, 995206, 1990412, 3483221, 5473633, 6966442, 10947266, 13932884, 21894532, 38315431, 68171611, 76630862, 136343222, 153261724, 272686444, 477201277, 749887721, 954402554, 1499775442, 1908805108, 2999550884, 5249214047, 10498428094, 20996856188]

約数ペア:

[(1, 20996856188), (2, 10498428094), (4, 5249214047), (7, 2999550884), (11, 1908805108), (14, 1499775442), (22, 954402554), (28, 749887721), (44, 477201277), (77, 272686444), (137, 153261724), (154, 136343222), (274, 76630862), (308, 68171611), (548, 38315431), (959, 21894532), (1507, 13932884), (1918, 10947266), (3014, 6966442), (3836, 5473633), (6028, 3483221), (10549, 1990412), (21098, 995206), (42196, 497603)]