78978520

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{4283}}^1$

素因数の和:4755

約数の個数: 32

約数和(自身を含む): 178128720

約数和(自身を除く): 99150200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1844, 2305, 3688, 4283, 4610, 8566, 9220, 17132, 18440, 21415, 34264, 42830, 85660, 171320, 1974463, 3948926, 7897852, 9872315, 15795704, 19744630, 39489260, 78978520]

約数ペア:

[(1, 78978520), (2, 39489260), (4, 19744630), (5, 15795704), (8, 9872315), (10, 7897852), (20, 3948926), (40, 1974463), (461, 171320), (922, 85660), (1844, 42830), (2305, 34264), (3688, 21415), (4283, 18440), (4610, 17132), (8566, 9220)]