19940025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2038

約数の個数: 48

約数和(自身を含む): 39680000

約数和(自身を除く): 19739975

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 1999, 3325, 5997, 9975, 9995, 13993, 29985, 37981, 41979, 49975, 69965, 113943, 149925, 189905, 209895, 265867, 349825, 569715, 797601, 949525, 1049475, 1329335, 2848575, 3988005, 6646675, 19940025]

約数ペア:

[(1, 19940025), (3, 6646675), (5, 3988005), (7, 2848575), (15, 1329335), (19, 1049475), (21, 949525), (25, 797601), (35, 569715), (57, 349825), (75, 265867), (95, 209895), (105, 189905), (133, 149925), (175, 113943), (285, 69965), (399, 49975), (475, 41979), (525, 37981), (665, 29985), (1425, 13993), (1995, 9995), (1999, 9975), (3325, 5997)]