1989015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{997}}^1$

素因数の和:1031

約数の個数: 32

約数和(自身を含む): 3832320

約数和(自身を除く): 1843305

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 997, 1995, 2991, 4985, 6979, 14955, 18943, 20937, 34895, 56829, 94715, 104685, 132601, 284145, 397803, 663005, 1989015]

約数ペア:

[(1, 1989015), (3, 663005), (5, 397803), (7, 284145), (15, 132601), (19, 104685), (21, 94715), (35, 56829), (57, 34895), (95, 20937), (105, 18943), (133, 14955), (285, 6979), (399, 4985), (665, 2991), (997, 1995)]