20655880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73771}}^1$

素因数の和:73789

約数の個数: 32

約数和(自身を含む): 53115840

約数和(自身を除く): 32459960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73771, 147542, 295084, 368855, 516397, 590168, 737710, 1032794, 1475420, 2065588, 2581985, 2950840, 4131176, 5163970, 10327940, 20655880]

約数ペア:

[(1, 20655880), (2, 10327940), (4, 5163970), (5, 4131176), (7, 2950840), (8, 2581985), (10, 2065588), (14, 1475420), (20, 1032794), (28, 737710), (35, 590168), (40, 516397), (56, 368855), (70, 295084), (140, 147542), (280, 73771)]