20494012

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 47190528

約数和(自身を除く): 26696516

約数列:

[1, 2, 4, 7, 11, 14, 22, 23, 28, 44, 46, 77, 92, 121, 154, 161, 242, 253, 263, 308, 322, 484, 506, 526, 644, 847, 1012, 1052, 1694, 1771, 1841, 2783, 2893, 3388, 3542, 3682, 5566, 5786, 6049, 7084, 7364, 11132, 11572, 12098, 19481, 20251, 24196, 31823, 38962, 40502, 42343, 63646, 66539, 77924, 81004, 84686, 127292, 133078, 169372, 222761, 266156, 445522, 465773, 731929, 891044, 931546, 1463858, 1863092, 2927716, 5123503, 10247006, 20494012]

約数ペア:

[(1, 20494012), (2, 10247006), (4, 5123503), (7, 2927716), (11, 1863092), (14, 1463858), (22, 931546), (23, 891044), (28, 731929), (44, 465773), (46, 445522), (77, 266156), (92, 222761), (121, 169372), (154, 133078), (161, 127292), (242, 84686), (253, 81004), (263, 77924), (308, 66539), (322, 63646), (484, 42343), (506, 40502), (526, 38962), (644, 31823), (847, 24196), (1012, 20251), (1052, 19481), (1694, 12098), (1771, 11572), (1841, 11132), (2783, 7364), (2893, 7084), (3388, 6049), (3542, 5786), (3682, 5566)]