16720818

素因数分解:

$2^1\times 3^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{691}}^1$

素因数の和:842

約数の個数: 32

約数和(自身を含む): 34710720

約数和(自身を除く): 17989902

約数列:

[1, 2, 3, 6, 37, 74, 109, 111, 218, 222, 327, 654, 691, 1382, 2073, 4033, 4146, 8066, 12099, 24198, 25567, 51134, 75319, 76701, 150638, 153402, 225957, 451914, 2786803, 5573606, 8360409, 16720818]

約数ペア:

[(1, 16720818), (2, 8360409), (3, 5573606), (6, 2786803), (37, 451914), (74, 225957), (109, 153402), (111, 150638), (218, 76701), (222, 75319), (327, 51134), (654, 25567), (691, 24198), (1382, 12099), (2073, 8066), (4033, 4146)]