128787568

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{449}}^1$

素因数の和:674

約数の個数: 80

約数和(自身を含む): 309355200

約数和(自身を除く): 180567632

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 197, 208, 364, 394, 449, 728, 788, 898, 1379, 1456, 1576, 1796, 2561, 2758, 3143, 3152, 3592, 5122, 5516, 5837, 6286, 7184, 10244, 11032, 11674, 12572, 17927, 20488, 22064, 23348, 25144, 35854, 40859, 40976, 46696, 50288, 71708, 81718, 88453, 93392, 143416, 163436, 176906, 286832, 326872, 353812, 619171, 653744, 707624, 1149889, 1238342, 1415248, 2299778, 2476684, 4599556, 4953368, 8049223, 9199112, 9906736, 16098446, 18398224, 32196892, 64393784, 128787568]

約数ペア:

[(1, 128787568), (2, 64393784), (4, 32196892), (7, 18398224), (8, 16098446), (13, 9906736), (14, 9199112), (16, 8049223), (26, 4953368), (28, 4599556), (52, 2476684), (56, 2299778), (91, 1415248), (104, 1238342), (112, 1149889), (182, 707624), (197, 653744), (208, 619171), (364, 353812), (394, 326872), (449, 286832), (728, 176906), (788, 163436), (898, 143416), (1379, 93392), (1456, 88453), (1576, 81718), (1796, 71708), (2561, 50288), (2758, 46696), (3143, 40976), (3152, 40859), (3592, 35854), (5122, 25144), (5516, 23348), (5837, 22064), (6286, 20488), (7184, 17927), (10244, 12572), (11032, 11674)]