3988005

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2033

約数の個数: 32

約数和(自身を含む): 7680000

約数和(自身を除く): 3691995

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 1999, 5997, 9995, 13993, 29985, 37981, 41979, 69965, 113943, 189905, 209895, 265867, 569715, 797601, 1329335, 3988005]

約数ペア:

[(1, 3988005), (3, 1329335), (5, 797601), (7, 569715), (15, 265867), (19, 209895), (21, 189905), (35, 113943), (57, 69965), (95, 41979), (105, 37981), (133, 29985), (285, 13993), (399, 9995), (665, 5997), (1995, 1999)]