21999159

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26861}}^1$

素因数の和:26887

約数の個数: 24

約数和(自身を含む): 39111072

約数和(自身を除く): 17111913

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26861, 80583, 188027, 241749, 349193, 564081, 1047579, 1692243, 2444351, 3142737, 7333053, 21999159]

約数ペア:

[(1, 21999159), (3, 7333053), (7, 3142737), (9, 2444351), (13, 1692243), (21, 1047579), (39, 564081), (63, 349193), (91, 241749), (117, 188027), (273, 80583), (819, 26861)]