21054278

素因数分解:

$2^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{18119}}^1$

素因数の和:18211

約数の個数: 16

約数和(自身を含む): 36529920

約数和(自身を除く): 15475642

約数列:

[1, 2, 7, 14, 83, 166, 581, 1162, 18119, 36238, 126833, 253666, 1503877, 3007754, 10527139, 21054278]

約数ペア:

[(1, 21054278), (2, 10527139), (7, 3007754), (14, 1503877), (83, 253666), (166, 126833), (581, 36238), (1162, 18119)]