666448940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{823}}^1\times {\mathrm{2131}}^1$

素因数の和:2982

約数の個数: 48

約数和(自身を含む): 1475685120

約数和(自身を除く): 809236180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 823, 1646, 2131, 3292, 4115, 4262, 8230, 8524, 10655, 15637, 16460, 21310, 31274, 40489, 42620, 62548, 78185, 80978, 156370, 161956, 202445, 312740, 404890, 809780, 1753813, 3507626, 7015252, 8769065, 17538130, 33322447, 35076260, 66644894, 133289788, 166612235, 333224470, 666448940]

約数ペア:

[(1, 666448940), (2, 333224470), (4, 166612235), (5, 133289788), (10, 66644894), (19, 35076260), (20, 33322447), (38, 17538130), (76, 8769065), (95, 7015252), (190, 3507626), (380, 1753813), (823, 809780), (1646, 404890), (2131, 312740), (3292, 202445), (4115, 161956), (4262, 156370), (8230, 80978), (8524, 78185), (10655, 62548), (15637, 42620), (16460, 40489), (21310, 31274)]