201971990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{166919}}^1$

素因数の和:166948

約数の個数: 24

約数和(自身を含む): 399606480

約数和(自身を除く): 197634490

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 166919, 333838, 834595, 1669190, 1836109, 3672218, 9180545, 18361090, 20197199, 40394398, 100985995, 201971990]

約数ペア:

[(1, 201971990), (2, 100985995), (5, 40394398), (10, 20197199), (11, 18361090), (22, 9180545), (55, 3672218), (110, 1836109), (121, 1669190), (242, 834595), (605, 333838), (1210, 166919)]