20531368

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{137}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 45904320

約数和(自身を除く): 25372952

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 131, 137, 143, 262, 274, 286, 524, 548, 572, 1048, 1096, 1144, 1441, 1507, 1703, 1781, 2882, 3014, 3406, 3562, 5764, 6028, 6812, 7124, 11528, 12056, 13624, 14248, 17947, 18733, 19591, 35894, 37466, 39182, 71788, 74932, 78364, 143576, 149864, 156728, 197417, 233311, 394834, 466622, 789668, 933244, 1579336, 1866488, 2566421, 5132842, 10265684, 20531368]

約数ペア:

[(1, 20531368), (2, 10265684), (4, 5132842), (8, 2566421), (11, 1866488), (13, 1579336), (22, 933244), (26, 789668), (44, 466622), (52, 394834), (88, 233311), (104, 197417), (131, 156728), (137, 149864), (143, 143576), (262, 78364), (274, 74932), (286, 71788), (524, 39182), (548, 37466), (572, 35894), (1048, 19591), (1096, 18733), (1144, 17947), (1441, 14248), (1507, 13624), (1703, 12056), (1781, 11528), (2882, 7124), (3014, 6812), (3406, 6028), (3562, 5764)]