278816512

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:649

約数の個数: 72

約数和(自身を含む): 603797600

約数和(自身を除く): 324981088

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 199, 208, 256, 398, 416, 421, 796, 832, 842, 1592, 1664, 1684, 2587, 3184, 3328, 3368, 5174, 5473, 6368, 6736, 10348, 10946, 12736, 13472, 20696, 21892, 25472, 26944, 41392, 43784, 50944, 53888, 82784, 83779, 87568, 107776, 165568, 167558, 175136, 331136, 335116, 350272, 662272, 670232, 700544, 1089127, 1340464, 1401088, 2178254, 2680928, 4356508, 5361856, 8713016, 10723712, 17426032, 21447424, 34852064, 69704128, 139408256, 278816512]

約数ペア:

[(1, 278816512), (2, 139408256), (4, 69704128), (8, 34852064), (13, 21447424), (16, 17426032), (26, 10723712), (32, 8713016), (52, 5361856), (64, 4356508), (104, 2680928), (128, 2178254), (199, 1401088), (208, 1340464), (256, 1089127), (398, 700544), (416, 670232), (421, 662272), (796, 350272), (832, 335116), (842, 331136), (1592, 175136), (1664, 167558), (1684, 165568), (2587, 107776), (3184, 87568), (3328, 83779), (3368, 82784), (5174, 53888), (5473, 50944), (6368, 43784), (6736, 41392), (10348, 26944), (10946, 25472), (12736, 21892), (13472, 20696)]