20640824

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{97}}^1\times {\mathrm{397}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 39784080

約数和(自身を除く): 19143256

約数列:

[1, 2, 4, 8, 67, 97, 134, 194, 268, 388, 397, 536, 776, 794, 1588, 3176, 6499, 12998, 25996, 26599, 38509, 51992, 53198, 77018, 106396, 154036, 212792, 308072, 2580103, 5160206, 10320412, 20640824]

約数ペア:

[(1, 20640824), (2, 10320412), (4, 5160206), (8, 2580103), (67, 308072), (97, 212792), (134, 154036), (194, 106396), (268, 77018), (388, 53198), (397, 51992), (536, 38509), (776, 26599), (794, 25996), (1588, 12998), (3176, 6499)]