21797601

素因数分解:

$3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1877}}^1$

素因数の和:1973

約数の個数: 24

約数和(自身を含む): 34254720

約数和(自身を除く): 12457119

約数列:

[1, 3, 7, 21, 49, 79, 147, 237, 553, 1659, 1877, 3871, 5631, 11613, 13139, 39417, 91973, 148283, 275919, 444849, 1037981, 3113943, 7265867, 21797601]

約数ペア:

[(1, 21797601), (3, 7265867), (7, 3113943), (21, 1037981), (49, 444849), (79, 275919), (147, 148283), (237, 91973), (553, 39417), (1659, 13139), (1877, 11613), (3871, 5631)]