21028049

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{619}}^1$

素因数の和:860

約数の個数: 16

約数和(自身を含む): 25236480

約数和(自身を除く): 4208431

約数列:

[1, 7, 23, 161, 211, 619, 1477, 4333, 4853, 14237, 33971, 99659, 130609, 914263, 3004007, 21028049]

約数ペア:

[(1, 21028049), (7, 3004007), (23, 914263), (161, 130609), (211, 99659), (619, 33971), (1477, 14237), (4333, 4853)]