20949903

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1307}}^1$

素因数の和:1463

約数の個数: 24

約数和(自身を含む): 32851728

約数和(自身を除く): 11901825

約数列:

[1, 3, 9, 13, 39, 117, 137, 411, 1233, 1307, 1781, 3921, 5343, 11763, 16029, 16991, 50973, 152919, 179059, 537177, 1611531, 2327767, 6983301, 20949903]

約数ペア:

[(1, 20949903), (3, 6983301), (9, 2327767), (13, 1611531), (39, 537177), (117, 179059), (137, 152919), (411, 50973), (1233, 16991), (1307, 16029), (1781, 11763), (3921, 5343)]