77442920

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3011}}^1$

素因数の和:3665

約数の個数: 32

約数和(自身を含む): 174575520

約数和(自身を除く): 97132600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3011, 3215, 5144, 6022, 6430, 12044, 12860, 15055, 24088, 25720, 30110, 60220, 120440, 1936073, 3872146, 7744292, 9680365, 15488584, 19360730, 38721460, 77442920]

約数ペア:

[(1, 77442920), (2, 38721460), (4, 19360730), (5, 15488584), (8, 9680365), (10, 7744292), (20, 3872146), (40, 1936073), (643, 120440), (1286, 60220), (2572, 30110), (3011, 25720), (3215, 24088), (5144, 15055), (6022, 12860), (6430, 12044)]