81125440

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1213}}^1$

素因数の和:1260

約数の個数: 112

約数和(自身を含む): 222016320

約数和(自身を除く): 140890880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 32, 38, 40, 44, 55, 64, 76, 80, 88, 95, 110, 152, 160, 176, 190, 209, 220, 304, 320, 352, 380, 418, 440, 608, 704, 760, 836, 880, 1045, 1213, 1216, 1520, 1672, 1760, 2090, 2426, 3040, 3344, 3520, 4180, 4852, 6065, 6080, 6688, 8360, 9704, 12130, 13343, 13376, 16720, 19408, 23047, 24260, 26686, 33440, 38816, 46094, 48520, 53372, 66715, 66880, 77632, 92188, 97040, 106744, 115235, 133430, 184376, 194080, 213488, 230470, 253517, 266860, 368752, 388160, 426976, 460940, 507034, 533720, 737504, 853952, 921880, 1014068, 1067440, 1267585, 1475008, 1843760, 2028136, 2134880, 2535170, 3687520, 4056272, 4269760, 5070340, 7375040, 8112544, 10140680, 16225088, 20281360, 40562720, 81125440]

約数ペア:

[(1, 81125440), (2, 40562720), (4, 20281360), (5, 16225088), (8, 10140680), (10, 8112544), (11, 7375040), (16, 5070340), (19, 4269760), (20, 4056272), (22, 3687520), (32, 2535170), (38, 2134880), (40, 2028136), (44, 1843760), (55, 1475008), (64, 1267585), (76, 1067440), (80, 1014068), (88, 921880), (95, 853952), (110, 737504), (152, 533720), (160, 507034), (176, 460940), (190, 426976), (209, 388160), (220, 368752), (304, 266860), (320, 253517), (352, 230470), (380, 213488), (418, 194080), (440, 184376), (608, 133430), (704, 115235), (760, 106744), (836, 97040), (880, 92188), (1045, 77632), (1213, 66880), (1216, 66715), (1520, 53372), (1672, 48520), (1760, 46094), (2090, 38816), (2426, 33440), (3040, 26686), (3344, 24260), (3520, 23047), (4180, 19408), (4852, 16720), (6065, 13376), (6080, 13343), (6688, 12130), (8360, 9704)]