77905420

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{18461}}^1$

素因数の和:18681

約数の個数: 24

約数和(自身を含む): 164385648

約数和(自身を除く): 86480228

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 18461, 36922, 73844, 92305, 184610, 369220, 3895271, 7790542, 15581084, 19476355, 38952710, 77905420]

約数ペア:

[(1, 77905420), (2, 38952710), (4, 19476355), (5, 15581084), (10, 7790542), (20, 3895271), (211, 369220), (422, 184610), (844, 92305), (1055, 73844), (2110, 36922), (4220, 18461)]