20205585

素因数分解:

$3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1543}}^1$

素因数の和:1654

約数の個数: 32

約数和(自身を含む): 36314880

約数和(自身を除く): 16109295

約数列:

[1, 3, 5, 9, 15, 27, 45, 97, 135, 291, 485, 873, 1455, 1543, 2619, 4365, 4629, 7715, 13095, 13887, 23145, 41661, 69435, 149671, 208305, 449013, 748355, 1347039, 2245065, 4041117, 6735195, 20205585]

約数ペア:

[(1, 20205585), (3, 6735195), (5, 4041117), (9, 2245065), (15, 1347039), (27, 748355), (45, 449013), (97, 208305), (135, 149671), (291, 69435), (485, 41661), (873, 23145), (1455, 13887), (1543, 13095), (2619, 7715), (4365, 4629)]