81339664

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:440

約数の個数: 80

約数和(自身を含む): 189273600

約数和(自身を除く): 107933936

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 79, 112, 116, 158, 203, 232, 316, 317, 406, 464, 553, 632, 634, 812, 1106, 1264, 1268, 1624, 2212, 2219, 2291, 2536, 3248, 4424, 4438, 4582, 5072, 8848, 8876, 9164, 9193, 16037, 17752, 18328, 18386, 25043, 32074, 35504, 36656, 36772, 50086, 64148, 64351, 73544, 100172, 128296, 128702, 147088, 175301, 200344, 256592, 257404, 350602, 400688, 514808, 701204, 726247, 1029616, 1402408, 1452494, 2804816, 2904988, 5083729, 5809976, 10167458, 11619952, 20334916, 40669832, 81339664]

約数ペア:

[(1, 81339664), (2, 40669832), (4, 20334916), (7, 11619952), (8, 10167458), (14, 5809976), (16, 5083729), (28, 2904988), (29, 2804816), (56, 1452494), (58, 1402408), (79, 1029616), (112, 726247), (116, 701204), (158, 514808), (203, 400688), (232, 350602), (316, 257404), (317, 256592), (406, 200344), (464, 175301), (553, 147088), (632, 128702), (634, 128296), (812, 100172), (1106, 73544), (1264, 64351), (1268, 64148), (1624, 50086), (2212, 36772), (2219, 36656), (2291, 35504), (2536, 32074), (3248, 25043), (4424, 18386), (4438, 18328), (4582, 17752), (5072, 16037), (8848, 9193), (8876, 9164)]