26580740

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 57380400

約数和(自身を除く): 30799660

約数列:

[1, 2, 4, 5, 10, 20, 89, 109, 137, 178, 218, 274, 356, 436, 445, 545, 548, 685, 890, 1090, 1370, 1780, 2180, 2740, 9701, 12193, 14933, 19402, 24386, 29866, 38804, 48505, 48772, 59732, 60965, 74665, 97010, 121930, 149330, 194020, 243860, 298660, 1329037, 2658074, 5316148, 6645185, 13290370, 26580740]

約数ペア:

[(1, 26580740), (2, 13290370), (4, 6645185), (5, 5316148), (10, 2658074), (20, 1329037), (89, 298660), (109, 243860), (137, 194020), (178, 149330), (218, 121930), (274, 97010), (356, 74665), (436, 60965), (445, 59732), (545, 48772), (548, 48505), (685, 38804), (890, 29866), (1090, 24386), (1370, 19402), (1780, 14933), (2180, 12193), (2740, 9701)]