21317751

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26029}}^1$

素因数の和:26055

約数の個数: 24

約数和(自身を含む): 37899680

約数和(自身を除く): 16581929

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26029, 78087, 182203, 234261, 338377, 546609, 1015131, 1639827, 2368639, 3045393, 7105917, 21317751]

約数ペア:

[(1, 21317751), (3, 7105917), (7, 3045393), (9, 2368639), (13, 1639827), (21, 1015131), (39, 546609), (63, 338377), (91, 234261), (117, 182203), (273, 78087), (819, 26029)]