20428065

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{21617}}^1$

素因数の和:21638

約数の個数: 32

約数和(自身を含む): 41506560

約数和(自身を除く): 21078495

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 21617, 64851, 108085, 151319, 194553, 324255, 453957, 583659, 756595, 972765, 1361871, 2269785, 2918295, 4085613, 6809355, 20428065]

約数ペア:

[(1, 20428065), (3, 6809355), (5, 4085613), (7, 2918295), (9, 2269785), (15, 1361871), (21, 972765), (27, 756595), (35, 583659), (45, 453957), (63, 324255), (105, 194553), (135, 151319), (189, 108085), (315, 64851), (945, 21617)]