20971880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30841}}^1$

素因数の和:30869

約数の個数: 32

約数和(自身を含む): 49964040

約数和(自身を除く): 28992160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30841, 61682, 123364, 154205, 246728, 308410, 524297, 616820, 1048594, 1233640, 2097188, 2621485, 4194376, 5242970, 10485940, 20971880]

約数ペア:

[(1, 20971880), (2, 10485940), (4, 5242970), (5, 4194376), (8, 2621485), (10, 2097188), (17, 1233640), (20, 1048594), (34, 616820), (40, 524297), (68, 308410), (85, 246728), (136, 154205), (170, 123364), (340, 61682), (680, 30841)]