20161665584

素因数分解:

$2^4\times {\mathrm{4957}}^1\times {\mathrm{254207}}^1$

素因数の和:259172

約数の個数: 20

約数和(自身を含む): 39071261184

約数和(自身を除く): 18909595600

約数列:

[1, 2, 4, 8, 16, 4957, 9914, 19828, 39656, 79312, 254207, 508414, 1016828, 2033656, 4067312, 1260104099, 2520208198, 5040416396, 10080832792, 20161665584]

約数ペア:

[(1, 20161665584), (2, 10080832792), (4, 5040416396), (8, 2520208198), (16, 1260104099), (4957, 4067312), (9914, 2033656), (19828, 1016828), (39656, 508414), (79312, 254207)]