16880440

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1063}}^1$

素因数の和:1471

約数の個数: 32

約数和(自身を含む): 38112480

約数和(自身を除く): 21232040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1063, 1588, 1985, 2126, 3176, 3970, 4252, 5315, 7940, 8504, 10630, 15880, 21260, 42520, 422011, 844022, 1688044, 2110055, 3376088, 4220110, 8440220, 16880440]

約数ペア:

[(1, 16880440), (2, 8440220), (4, 4220110), (5, 3376088), (8, 2110055), (10, 1688044), (20, 844022), (40, 422011), (397, 42520), (794, 21260), (1063, 15880), (1588, 10630), (1985, 8504), (2126, 7940), (3176, 5315), (3970, 4252)]