20688180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{9319}}^1$

素因数の和:9368

約数の個数: 48

約数和(自身を含む): 59498880

約数和(自身を除く): 38810700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 740, 1110, 2220, 9319, 18638, 27957, 37276, 46595, 55914, 93190, 111828, 139785, 186380, 279570, 344803, 559140, 689606, 1034409, 1379212, 1724015, 2068818, 3448030, 4137636, 5172045, 6896060, 10344090, 20688180]

約数ペア:

[(1, 20688180), (2, 10344090), (3, 6896060), (4, 5172045), (5, 4137636), (6, 3448030), (10, 2068818), (12, 1724015), (15, 1379212), (20, 1034409), (30, 689606), (37, 559140), (60, 344803), (74, 279570), (111, 186380), (148, 139785), (185, 111828), (222, 93190), (370, 55914), (444, 46595), (555, 37276), (740, 27957), (1110, 18638), (2220, 9319)]