17991309

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{673}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 29332480

約数和(自身を除く): 11341171

約数列:

[1, 3, 7, 19, 21, 57, 67, 133, 201, 399, 469, 673, 1273, 1407, 2019, 3819, 4711, 8911, 12787, 14133, 26733, 38361, 45091, 89509, 135273, 268527, 315637, 856729, 946911, 2570187, 5997103, 17991309]

約数ペア:

[(1, 17991309), (3, 5997103), (7, 2570187), (19, 946911), (21, 856729), (57, 315637), (67, 268527), (133, 135273), (201, 89509), (399, 45091), (469, 38361), (673, 26733), (1273, 14133), (1407, 12787), (2019, 8911), (3819, 4711)]