161731840

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4357}}^1$

素因数の和:4407

約数の個数: 72

約数和(自身を含む): 400848840

約数和(自身を除く): 239117000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 290, 320, 464, 580, 640, 928, 1160, 1280, 1856, 2320, 3712, 4357, 4640, 7424, 8714, 9280, 17428, 18560, 21785, 34856, 37120, 43570, 69712, 87140, 126353, 139424, 174280, 252706, 278848, 348560, 505412, 557696, 631765, 697120, 1010824, 1115392, 1263530, 1394240, 2021648, 2527060, 2788480, 4043296, 5054120, 5576960, 8086592, 10108240, 16173184, 20216480, 32346368, 40432960, 80865920, 161731840]

約数ペア:

[(1, 161731840), (2, 80865920), (4, 40432960), (5, 32346368), (8, 20216480), (10, 16173184), (16, 10108240), (20, 8086592), (29, 5576960), (32, 5054120), (40, 4043296), (58, 2788480), (64, 2527060), (80, 2021648), (116, 1394240), (128, 1263530), (145, 1115392), (160, 1010824), (232, 697120), (256, 631765), (290, 557696), (320, 505412), (464, 348560), (580, 278848), (640, 252706), (928, 174280), (1160, 139424), (1280, 126353), (1856, 87140), (2320, 69712), (3712, 43570), (4357, 37120), (4640, 34856), (7424, 21785), (8714, 18560), (9280, 17428)]