20775560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39953}}^1$

素因数の和:39977

約数の個数: 32

約数和(自身を含む): 50342040

約数和(自身を除く): 29566480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39953, 79906, 159812, 199765, 319624, 399530, 519389, 799060, 1038778, 1598120, 2077556, 2596945, 4155112, 5193890, 10387780, 20775560]

約数ペア:

[(1, 20775560), (2, 10387780), (4, 5193890), (5, 4155112), (8, 2596945), (10, 2077556), (13, 1598120), (20, 1038778), (26, 799060), (40, 519389), (52, 399530), (65, 319624), (104, 199765), (130, 159812), (260, 79906), (520, 39953)]