20781288

素因数分解:

$2^3\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1381}}^1$

素因数の和:1423

約数の個数: 96

約数和(自身を含む): 64677600

約数和(自身を除く): 43896312

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 19, 22, 24, 33, 36, 38, 44, 57, 66, 72, 76, 88, 99, 114, 132, 152, 171, 198, 209, 228, 264, 342, 396, 418, 456, 627, 684, 792, 836, 1254, 1368, 1381, 1672, 1881, 2508, 2762, 3762, 4143, 5016, 5524, 7524, 8286, 11048, 12429, 15048, 15191, 16572, 24858, 26239, 30382, 33144, 45573, 49716, 52478, 60764, 78717, 91146, 99432, 104956, 121528, 136719, 157434, 182292, 209912, 236151, 273438, 288629, 314868, 364584, 472302, 546876, 577258, 629736, 865887, 944604, 1093752, 1154516, 1731774, 1889208, 2309032, 2597661, 3463548, 5195322, 6927096, 10390644, 20781288]

約数ペア:

[(1, 20781288), (2, 10390644), (3, 6927096), (4, 5195322), (6, 3463548), (8, 2597661), (9, 2309032), (11, 1889208), (12, 1731774), (18, 1154516), (19, 1093752), (22, 944604), (24, 865887), (33, 629736), (36, 577258), (38, 546876), (44, 472302), (57, 364584), (66, 314868), (72, 288629), (76, 273438), (88, 236151), (99, 209912), (114, 182292), (132, 157434), (152, 136719), (171, 121528), (198, 104956), (209, 99432), (228, 91146), (264, 78717), (342, 60764), (396, 52478), (418, 49716), (456, 45573), (627, 33144), (684, 30382), (792, 26239), (836, 24858), (1254, 16572), (1368, 15191), (1381, 15048), (1672, 12429), (1881, 11048), (2508, 8286), (2762, 7524), (3762, 5524), (4143, 5016)]