21764342

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{991}}^1$

素因数の和:1211

約数の個数: 16

約数和(自身を含む): 33331200

約数和(自身を除く): 11566858

約数列:

[1, 2, 79, 139, 158, 278, 991, 1982, 10981, 21962, 78289, 137749, 156578, 275498, 10882171, 21764342]

約数ペア:

[(1, 21764342), (2, 10882171), (79, 275498), (139, 156578), (158, 137749), (278, 78289), (991, 21962), (1982, 10981)]