19985511

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3853}}^1$

素因数の和:3895

約数の個数: 32

約数和(自身を含む): 34531840

約数和(自身を除く): 14546329

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 3853, 5187, 11559, 26971, 50089, 73207, 80913, 150267, 219621, 350623, 512449, 951691, 1051869, 1537347, 2855073, 6661837, 19985511]

約数ペア:

[(1, 19985511), (3, 6661837), (7, 2855073), (13, 1537347), (19, 1051869), (21, 951691), (39, 512449), (57, 350623), (91, 219621), (133, 150267), (247, 80913), (273, 73207), (399, 50089), (741, 26971), (1729, 11559), (3853, 5187)]