21857264

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{233}}^1$

素因数の和:306

約数の個数: 80

約数和(自身を含む): 51184224

約数和(自身を除く): 29326960

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 41, 44, 52, 82, 88, 104, 143, 164, 176, 208, 233, 286, 328, 451, 466, 533, 572, 656, 902, 932, 1066, 1144, 1804, 1864, 2132, 2288, 2563, 3029, 3608, 3728, 4264, 5126, 5863, 6058, 7216, 8528, 9553, 10252, 11726, 12116, 19106, 20504, 23452, 24232, 33319, 38212, 41008, 46904, 48464, 66638, 76424, 93808, 105083, 124189, 133276, 152848, 210166, 248378, 266552, 420332, 496756, 533104, 840664, 993512, 1366079, 1681328, 1987024, 2732158, 5464316, 10928632, 21857264]

約数ペア:

[(1, 21857264), (2, 10928632), (4, 5464316), (8, 2732158), (11, 1987024), (13, 1681328), (16, 1366079), (22, 993512), (26, 840664), (41, 533104), (44, 496756), (52, 420332), (82, 266552), (88, 248378), (104, 210166), (143, 152848), (164, 133276), (176, 124189), (208, 105083), (233, 93808), (286, 76424), (328, 66638), (451, 48464), (466, 46904), (533, 41008), (572, 38212), (656, 33319), (902, 24232), (932, 23452), (1066, 20504), (1144, 19106), (1804, 12116), (1864, 11726), (2132, 10252), (2288, 9553), (2563, 8528), (3029, 7216), (3608, 6058), (3728, 5863), (4264, 5126)]