21605661

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31177}}^1$

素因数の和:31201

約数の個数: 24

約数和(自身を含む): 38910144

約数和(自身を除く): 17304483

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 31177, 93531, 218239, 280593, 342947, 654717, 1028841, 1964151, 2400629, 3086523, 7201887, 21605661]

約数ペア:

[(1, 21605661), (3, 7201887), (7, 3086523), (9, 2400629), (11, 1964151), (21, 1028841), (33, 654717), (63, 342947), (77, 280593), (99, 218239), (231, 93531), (693, 31177)]