64209920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{12541}}^1$

素因数の和:12566

約数の個数: 44

約数和(自身を含む): 154040844

約数和(自身を除く): 89830924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 12541, 25082, 50164, 62705, 100328, 125410, 200656, 250820, 401312, 501640, 802624, 1003280, 1605248, 2006560, 3210496, 4013120, 6420992, 8026240, 12841984, 16052480, 32104960, 64209920]

約数ペア:

[(1, 64209920), (2, 32104960), (4, 16052480), (5, 12841984), (8, 8026240), (10, 6420992), (16, 4013120), (20, 3210496), (32, 2006560), (40, 1605248), (64, 1003280), (80, 802624), (128, 501640), (160, 401312), (256, 250820), (320, 200656), (512, 125410), (640, 100328), (1024, 62705), (1280, 50164), (2560, 25082), (5120, 12541)]