21785148

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:328

約数の個数: 144

約数和(自身を含む): 71285760

約数和(自身を除く): 49500612

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 29, 33, 36, 42, 44, 58, 63, 66, 77, 84, 87, 99, 116, 126, 132, 154, 174, 198, 203, 231, 252, 261, 271, 308, 319, 348, 396, 406, 462, 522, 542, 609, 638, 693, 812, 813, 924, 957, 1044, 1084, 1218, 1276, 1386, 1626, 1827, 1897, 1914, 2233, 2436, 2439, 2772, 2871, 2981, 3252, 3654, 3794, 3828, 4466, 4878, 5691, 5742, 5962, 6699, 7308, 7588, 7859, 8932, 8943, 9756, 11382, 11484, 11924, 13398, 15718, 17073, 17886, 20097, 20867, 22764, 23577, 26796, 26829, 31436, 34146, 35772, 40194, 41734, 47154, 53658, 55013, 62601, 68292, 70731, 80388, 83468, 86449, 94308, 107316, 110026, 125202, 141462, 165039, 172898, 187803, 220052, 250404, 259347, 282924, 330078, 345796, 375606, 495117, 518694, 605143, 660156, 751212, 778041, 990234, 1037388, 1210286, 1556082, 1815429, 1980468, 2420572, 3112164, 3630858, 5446287, 7261716, 10892574, 21785148]

約数ペア:

[(1, 21785148), (2, 10892574), (3, 7261716), (4, 5446287), (6, 3630858), (7, 3112164), (9, 2420572), (11, 1980468), (12, 1815429), (14, 1556082), (18, 1210286), (21, 1037388), (22, 990234), (28, 778041), (29, 751212), (33, 660156), (36, 605143), (42, 518694), (44, 495117), (58, 375606), (63, 345796), (66, 330078), (77, 282924), (84, 259347), (87, 250404), (99, 220052), (116, 187803), (126, 172898), (132, 165039), (154, 141462), (174, 125202), (198, 110026), (203, 107316), (231, 94308), (252, 86449), (261, 83468), (271, 80388), (308, 70731), (319, 68292), (348, 62601), (396, 55013), (406, 53658), (462, 47154), (522, 41734), (542, 40194), (609, 35772), (638, 34146), (693, 31436), (812, 26829), (813, 26796), (924, 23577), (957, 22764), (1044, 20867), (1084, 20097), (1218, 17886), (1276, 17073), (1386, 15718), (1626, 13398), (1827, 11924), (1897, 11484), (1914, 11382), (2233, 9756), (2436, 8943), (2439, 8932), (2772, 7859), (2871, 7588), (2981, 7308), (3252, 6699), (3654, 5962), (3794, 5742), (3828, 5691), (4466, 4878)]