81329768

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{293}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 175588560

約数和(自身を除く): 94258792

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 157, 221, 293, 314, 442, 586, 628, 884, 1172, 1256, 1768, 2041, 2344, 2669, 3809, 4082, 4981, 5338, 7618, 8164, 9962, 10676, 15236, 16328, 19924, 21352, 30472, 34697, 39848, 46001, 64753, 69394, 92002, 129506, 138788, 184004, 259012, 277576, 368008, 518024, 598013, 782017, 1196026, 1564034, 2392052, 3128068, 4784104, 6256136, 10166221, 20332442, 40664884, 81329768]

約数ペア:

[(1, 81329768), (2, 40664884), (4, 20332442), (8, 10166221), (13, 6256136), (17, 4784104), (26, 3128068), (34, 2392052), (52, 1564034), (68, 1196026), (104, 782017), (136, 598013), (157, 518024), (221, 368008), (293, 277576), (314, 259012), (442, 184004), (586, 138788), (628, 129506), (884, 92002), (1172, 69394), (1256, 64753), (1768, 46001), (2041, 39848), (2344, 34697), (2669, 30472), (3809, 21352), (4082, 19924), (4981, 16328), (5338, 15236), (7618, 10676), (8164, 9962)]