21053878

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{347}}^1\times {\mathrm{1319}}^1$

素因数の和:1691

約数の個数: 16

約数和(自身を含む): 33073920

約数和(自身を除く): 12020042

約数列:

[1, 2, 23, 46, 347, 694, 1319, 2638, 7981, 15962, 30337, 60674, 457693, 915386, 10526939, 21053878]

約数ペア:

[(1, 21053878), (2, 10526939), (23, 915386), (46, 457693), (347, 60674), (694, 30337), (1319, 15962), (2638, 7981)]