128940975

素因数分解:

$3^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 240252480

約数和(自身を除く): 111311505

約数列:

[1, 3, 5, 9, 15, 25, 45, 47, 75, 89, 137, 141, 225, 235, 267, 411, 423, 445, 685, 705, 801, 1175, 1233, 1335, 2055, 2115, 2225, 3425, 3525, 4005, 4183, 6165, 6439, 6675, 10275, 10575, 12193, 12549, 19317, 20025, 20915, 30825, 32195, 36579, 37647, 57951, 60965, 62745, 96585, 104575, 109737, 160975, 182895, 188235, 289755, 304825, 313725, 482925, 548685, 573071, 914475, 941175, 1448775, 1719213, 2743425, 2865355, 5157639, 8596065, 14326775, 25788195, 42980325, 128940975]

約数ペア:

[(1, 128940975), (3, 42980325), (5, 25788195), (9, 14326775), (15, 8596065), (25, 5157639), (45, 2865355), (47, 2743425), (75, 1719213), (89, 1448775), (137, 941175), (141, 914475), (225, 573071), (235, 548685), (267, 482925), (411, 313725), (423, 304825), (445, 289755), (685, 188235), (705, 182895), (801, 160975), (1175, 109737), (1233, 104575), (1335, 96585), (2055, 62745), (2115, 60965), (2225, 57951), (3425, 37647), (3525, 36579), (4005, 32195), (4183, 30825), (6165, 20915), (6439, 20025), (6675, 19317), (10275, 12549), (10575, 12193)]