261982128

素因数分解:

$2^4\times 3^1\times {\mathrm{41}}^1\times {\mathrm{133121}}^1$

素因数の和:133173

約数の個数: 40

約数和(自身を含む): 693299376

約数和(自身を除く): 431317248

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 41, 48, 82, 123, 164, 246, 328, 492, 656, 984, 1968, 133121, 266242, 399363, 532484, 798726, 1064968, 1597452, 2129936, 3194904, 5457961, 6389808, 10915922, 16373883, 21831844, 32747766, 43663688, 65495532, 87327376, 130991064, 261982128]

約数ペア:

[(1, 261982128), (2, 130991064), (3, 87327376), (4, 65495532), (6, 43663688), (8, 32747766), (12, 21831844), (16, 16373883), (24, 10915922), (41, 6389808), (48, 5457961), (82, 3194904), (123, 2129936), (164, 1597452), (246, 1064968), (328, 798726), (492, 532484), (656, 399363), (984, 266242), (1968, 133121)]