20801584

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{353}}^1$

素因数の和:517

約数の個数: 40

約数和(自身を含む): 42140160

約数和(自身を除く): 21338576

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 127, 232, 254, 353, 464, 508, 706, 1016, 1412, 2032, 2824, 3683, 5648, 7366, 10237, 14732, 20474, 29464, 40948, 44831, 58928, 81896, 89662, 163792, 179324, 358648, 717296, 1300099, 2600198, 5200396, 10400792, 20801584]

約数ペア:

[(1, 20801584), (2, 10400792), (4, 5200396), (8, 2600198), (16, 1300099), (29, 717296), (58, 358648), (116, 179324), (127, 163792), (232, 89662), (254, 81896), (353, 58928), (464, 44831), (508, 40948), (706, 29464), (1016, 20474), (1412, 14732), (2032, 10237), (2824, 7366), (3683, 5648)]