12761660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 27941760

約数和(自身を除く): 15180100

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 197, 205, 316, 394, 395, 410, 788, 790, 820, 985, 1580, 1970, 3239, 3940, 6478, 8077, 12956, 15563, 16154, 16195, 31126, 32308, 32390, 40385, 62252, 64780, 77815, 80770, 155630, 161540, 311260, 638083, 1276166, 2552332, 3190415, 6380830, 12761660]

約数ペア:

[(1, 12761660), (2, 6380830), (4, 3190415), (5, 2552332), (10, 1276166), (20, 638083), (41, 311260), (79, 161540), (82, 155630), (158, 80770), (164, 77815), (197, 64780), (205, 62252), (316, 40385), (394, 32390), (395, 32308), (410, 31126), (788, 16195), (790, 16154), (820, 15563), (985, 12956), (1580, 8077), (1970, 6478), (3239, 3940)]