3984015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1997}}^1$

素因数の和:2031

約数の個数: 32

約数和(自身を含む): 7672320

約数和(自身を除く): 3688305

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 1997, 5991, 9985, 13979, 29955, 37943, 41937, 69895, 113829, 189715, 209685, 265601, 569145, 796803, 1328005, 3984015]

約数ペア:

[(1, 3984015), (3, 1328005), (5, 796803), (7, 569145), (15, 265601), (19, 209685), (21, 189715), (35, 113829), (57, 69895), (95, 41937), (105, 37943), (133, 29955), (285, 13979), (399, 9985), (665, 5991), (1995, 1997)]