161720680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{367547}}^1$

素因数の和:367569

約数の個数: 32

約数和(自身を含む): 396951840

約数和(自身を除く): 235231160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 367547, 735094, 1470188, 1837735, 2940376, 3675470, 4043017, 7350940, 8086034, 14701880, 16172068, 20215085, 32344136, 40430170, 80860340, 161720680]

約数ペア:

[(1, 161720680), (2, 80860340), (4, 40430170), (5, 32344136), (8, 20215085), (10, 16172068), (11, 14701880), (20, 8086034), (22, 7350940), (40, 4043017), (44, 3675470), (55, 2940376), (88, 1837735), (110, 1470188), (220, 735094), (440, 367547)]