20090401925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{18223}}^1$

素因数の和:18474

約数の個数: 48

約数和(自身を含む): 28744350720

約数和(自身を除く): 8653948795

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 211, 275, 475, 1045, 1055, 2321, 4009, 5225, 5275, 11605, 18223, 20045, 44099, 58025, 91115, 100225, 200453, 220495, 346237, 455575, 1002265, 1102475, 1731185, 3808607, 3845053, 5011325, 8655925, 19043035, 19225265, 42295583, 73056007, 95215175, 96126325, 211477915, 365280035, 803616077, 1057389575, 1826400175, 4018080385, 20090401925]

約数ペア:

[(1, 20090401925), (5, 4018080385), (11, 1826400175), (19, 1057389575), (25, 803616077), (55, 365280035), (95, 211477915), (209, 96126325), (211, 95215175), (275, 73056007), (475, 42295583), (1045, 19225265), (1055, 19043035), (2321, 8655925), (4009, 5011325), (5225, 3845053), (5275, 3808607), (11605, 1731185), (18223, 1102475), (20045, 1002265), (44099, 455575), (58025, 346237), (91115, 220495), (100225, 200453)]