20671443

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{293}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 33866448

約数和(自身を除く): 13195005

約数列:

[1, 3, 9, 13, 27, 39, 67, 81, 117, 201, 293, 351, 603, 871, 879, 1053, 1809, 2613, 2637, 3809, 5427, 7839, 7911, 11427, 19631, 23517, 23733, 34281, 58893, 70551, 102843, 176679, 255203, 308529, 530037, 765609, 1590111, 2296827, 6890481, 20671443]

約数ペア:

[(1, 20671443), (3, 6890481), (9, 2296827), (13, 1590111), (27, 765609), (39, 530037), (67, 308529), (81, 255203), (117, 176679), (201, 102843), (293, 70551), (351, 58893), (603, 34281), (871, 23733), (879, 23517), (1053, 19631), (1809, 11427), (2613, 7911), (2637, 7839), (3809, 5427)]