20465552

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1123}}^1$

素因数の和:1215

約数の個数: 40

約数和(自身を含む): 42649056

約数和(自身を除く): 22183504

約数列:

[1, 2, 4, 8, 16, 17, 34, 67, 68, 134, 136, 268, 272, 536, 1072, 1123, 1139, 2246, 2278, 4492, 4556, 8984, 9112, 17968, 18224, 19091, 38182, 75241, 76364, 150482, 152728, 300964, 305456, 601928, 1203856, 1279097, 2558194, 5116388, 10232776, 20465552]

約数ペア:

[(1, 20465552), (2, 10232776), (4, 5116388), (8, 2558194), (16, 1279097), (17, 1203856), (34, 601928), (67, 305456), (68, 300964), (134, 152728), (136, 150482), (268, 76364), (272, 75241), (536, 38182), (1072, 19091), (1123, 18224), (1139, 17968), (2246, 9112), (2278, 8984), (4492, 4556)]