21603897

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1117}}^1$

素因数の和:1437

約数の個数: 24

約数和(自身を含む): 35811776

約数和(自身を除く): 14207879

約数列:

[1, 3, 7, 9, 21, 63, 307, 921, 1117, 2149, 2763, 3351, 6447, 7819, 10053, 19341, 23457, 70371, 342919, 1028757, 2400433, 3086271, 7201299, 21603897]

約数ペア:

[(1, 21603897), (3, 7201299), (7, 3086271), (9, 2400433), (21, 1028757), (63, 342919), (307, 70371), (921, 23457), (1117, 19341), (2149, 10053), (2763, 7819), (3351, 6447)]