20673016

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:488

約数の個数: 64

約数和(自身を含む): 48484800

約数和(自身を除く): 27811784

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 73, 91, 104, 146, 182, 292, 364, 389, 511, 584, 728, 778, 949, 1022, 1556, 1898, 2044, 2723, 3112, 3796, 4088, 5057, 5446, 6643, 7592, 10114, 10892, 13286, 20228, 21784, 26572, 28397, 35399, 40456, 53144, 56794, 70798, 113588, 141596, 198779, 227176, 283192, 369161, 397558, 738322, 795116, 1476644, 1590232, 2584127, 2953288, 5168254, 10336508, 20673016]

約数ペア:

[(1, 20673016), (2, 10336508), (4, 5168254), (7, 2953288), (8, 2584127), (13, 1590232), (14, 1476644), (26, 795116), (28, 738322), (52, 397558), (56, 369161), (73, 283192), (91, 227176), (104, 198779), (146, 141596), (182, 113588), (292, 70798), (364, 56794), (389, 53144), (511, 40456), (584, 35399), (728, 28397), (778, 26572), (949, 21784), (1022, 20228), (1556, 13286), (1898, 10892), (2044, 10114), (2723, 7592), (3112, 6643), (3796, 5446), (4088, 5057)]