21521254

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1\times {\mathrm{1109}}^1$

素因数の和:1455

約数の個数: 16

約数和(自身を含む): 33459840

約数和(自身を除く): 11938586

約数列:

[1, 2, 31, 62, 313, 626, 1109, 2218, 9703, 19406, 34379, 68758, 347117, 694234, 10760627, 21521254]

約数ペア:

[(1, 21521254), (2, 10760627), (31, 694234), (62, 347117), (313, 68758), (626, 34379), (1109, 19406), (2218, 9703)]