21651919

素因数分解:

${\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1$

素因数の和:550

約数の個数: 16

約数和(自身を含む): 23541760

約数和(自身を除く): 1889841

約数列:

[1, 31, 37, 43, 439, 1147, 1333, 1591, 13609, 16243, 18877, 49321, 503533, 585187, 698449, 21651919]

約数ペア:

[(1, 21651919), (31, 698449), (37, 585187), (43, 503533), (439, 49321), (1147, 18877), (1333, 16243), (1591, 13609)]