21309517725

素因数分解:

$3^1\times 5^2\times {\mathrm{137}}^1\times {\mathrm{211}}^1\times {\mathrm{9829}}^1$

素因数の和:10190

約数の個数: 48

約数和(自身を含む): 35660723520

約数和(自身を除く): 14351205795

約数列:

[1, 3, 5, 15, 25, 75, 137, 211, 411, 633, 685, 1055, 2055, 3165, 3425, 5275, 9829, 10275, 15825, 28907, 29487, 49145, 86721, 144535, 147435, 245725, 433605, 722675, 737175, 1346573, 2073919, 2168025, 4039719, 6221757, 6732865, 10369595, 20198595, 31108785, 33664325, 51847975, 100992975, 155543925, 284126903, 852380709, 1420634515, 4261903545, 7103172575, 21309517725]

約数ペア:

[(1, 21309517725), (3, 7103172575), (5, 4261903545), (15, 1420634515), (25, 852380709), (75, 284126903), (137, 155543925), (211, 100992975), (411, 51847975), (633, 33664325), (685, 31108785), (1055, 20198595), (2055, 10369595), (3165, 6732865), (3425, 6221757), (5275, 4039719), (9829, 2168025), (10275, 2073919), (15825, 1346573), (28907, 737175), (29487, 722675), (49145, 433605), (86721, 245725), (144535, 147435)]