81321856

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:292

約数の個数: 128

約数和(自身を含む): 208373760

約数和(自身を除く): 127051904

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 37, 44, 56, 64, 74, 77, 88, 112, 128, 148, 154, 176, 223, 224, 259, 296, 308, 352, 407, 446, 448, 518, 592, 616, 704, 814, 892, 896, 1036, 1184, 1232, 1408, 1561, 1628, 1784, 2072, 2368, 2453, 2464, 2849, 3122, 3256, 3568, 4144, 4736, 4906, 4928, 5698, 6244, 6512, 7136, 8251, 8288, 9812, 9856, 11396, 12488, 13024, 14272, 16502, 16576, 17171, 19624, 22792, 24976, 26048, 28544, 33004, 33152, 34342, 39248, 45584, 49952, 52096, 57757, 66008, 68684, 78496, 90761, 91168, 99904, 115514, 132016, 137368, 156992, 181522, 182336, 199808, 231028, 264032, 274736, 313984, 363044, 364672, 462056, 528064, 549472, 635327, 726088, 924112, 1056128, 1098944, 1270654, 1452176, 1848224, 2197888, 2541308, 2904352, 3696448, 5082616, 5808704, 7392896, 10165232, 11617408, 20330464, 40660928, 81321856]

約数ペア:

[(1, 81321856), (2, 40660928), (4, 20330464), (7, 11617408), (8, 10165232), (11, 7392896), (14, 5808704), (16, 5082616), (22, 3696448), (28, 2904352), (32, 2541308), (37, 2197888), (44, 1848224), (56, 1452176), (64, 1270654), (74, 1098944), (77, 1056128), (88, 924112), (112, 726088), (128, 635327), (148, 549472), (154, 528064), (176, 462056), (223, 364672), (224, 363044), (259, 313984), (296, 274736), (308, 264032), (352, 231028), (407, 199808), (446, 182336), (448, 181522), (518, 156992), (592, 137368), (616, 132016), (704, 115514), (814, 99904), (892, 91168), (896, 90761), (1036, 78496), (1184, 68684), (1232, 66008), (1408, 57757), (1561, 52096), (1628, 49952), (1784, 45584), (2072, 39248), (2368, 34342), (2453, 33152), (2464, 33004), (2849, 28544), (3122, 26048), (3256, 24976), (3568, 22792), (4144, 19624), (4736, 17171), (4906, 16576), (4928, 16502), (5698, 14272), (6244, 13024), (6512, 12488), (7136, 11396), (8251, 9856), (8288, 9812)]