20880464

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4091}}^1$

素因数の和:4139

約数の個数: 40

約数和(自身を含む): 45666720

約数和(自身を除く): 24786256

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 44, 58, 88, 116, 176, 232, 319, 464, 638, 1276, 2552, 4091, 5104, 8182, 16364, 32728, 45001, 65456, 90002, 118639, 180004, 237278, 360008, 474556, 720016, 949112, 1305029, 1898224, 2610058, 5220116, 10440232, 20880464]

約数ペア:

[(1, 20880464), (2, 10440232), (4, 5220116), (8, 2610058), (11, 1898224), (16, 1305029), (22, 949112), (29, 720016), (44, 474556), (58, 360008), (88, 237278), (116, 180004), (176, 118639), (232, 90002), (319, 65456), (464, 45001), (638, 32728), (1276, 16364), (2552, 8182), (4091, 5104)]