77788720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22613}}^1$

素因数の和:22669

約数の個数: 40

約数和(自身を含む): 185072976

約数和(自身を除く): 107284256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 22613, 45226, 90452, 113065, 180904, 226130, 361808, 452260, 904520, 972359, 1809040, 1944718, 3889436, 4861795, 7778872, 9723590, 15557744, 19447180, 38894360, 77788720]

約数ペア:

[(1, 77788720), (2, 38894360), (4, 19447180), (5, 15557744), (8, 9723590), (10, 7778872), (16, 4861795), (20, 3889436), (40, 1944718), (43, 1809040), (80, 972359), (86, 904520), (172, 452260), (215, 361808), (344, 226130), (430, 180904), (688, 113065), (860, 90452), (1720, 45226), (3440, 22613)]