20976976

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{853}}^1$

素因数の和:943

約数の個数: 40

約数和(自身を含む): 42887880

約数和(自身を除く): 21910904

約数列:

[1, 2, 4, 8, 16, 29, 53, 58, 106, 116, 212, 232, 424, 464, 848, 853, 1537, 1706, 3074, 3412, 6148, 6824, 12296, 13648, 24592, 24737, 45209, 49474, 90418, 98948, 180836, 197896, 361672, 395792, 723344, 1311061, 2622122, 5244244, 10488488, 20976976]

約数ペア:

[(1, 20976976), (2, 10488488), (4, 5244244), (8, 2622122), (16, 1311061), (29, 723344), (53, 395792), (58, 361672), (106, 197896), (116, 180836), (212, 98948), (232, 90418), (424, 49474), (464, 45209), (848, 24737), (853, 24592), (1537, 13648), (1706, 12296), (3074, 6824), (3412, 6148)]