77940520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1109}}^1$

素因数の和:1378

約数の個数: 64

約数和(自身を含む): 201398400

約数和(自身を除く): 123457880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 251, 280, 502, 1004, 1109, 1255, 1757, 2008, 2218, 2510, 3514, 4436, 5020, 5545, 7028, 7763, 8785, 8872, 10040, 11090, 14056, 15526, 17570, 22180, 31052, 35140, 38815, 44360, 62104, 70280, 77630, 155260, 278359, 310520, 556718, 1113436, 1391795, 1948513, 2226872, 2783590, 3897026, 5567180, 7794052, 9742565, 11134360, 15588104, 19485130, 38970260, 77940520]

約数ペア:

[(1, 77940520), (2, 38970260), (4, 19485130), (5, 15588104), (7, 11134360), (8, 9742565), (10, 7794052), (14, 5567180), (20, 3897026), (28, 2783590), (35, 2226872), (40, 1948513), (56, 1391795), (70, 1113436), (140, 556718), (251, 310520), (280, 278359), (502, 155260), (1004, 77630), (1109, 70280), (1255, 62104), (1757, 44360), (2008, 38815), (2218, 35140), (2510, 31052), (3514, 22180), (4436, 17570), (5020, 15526), (5545, 14056), (7028, 11090), (7763, 10040), (8785, 8872)]