20702385

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1549}}^1$

素因数の和:1580

約数の個数: 48

約数和(自身を含む): 40622400

約数和(自身を除く): 19920015

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 243, 297, 405, 495, 891, 1215, 1485, 1549, 2673, 4455, 4647, 7745, 13365, 13941, 17039, 23235, 41823, 51117, 69705, 85195, 125469, 153351, 209115, 255585, 376407, 460053, 627345, 766755, 1380159, 1882035, 2300265, 4140477, 6900795, 20702385]

約数ペア:

[(1, 20702385), (3, 6900795), (5, 4140477), (9, 2300265), (11, 1882035), (15, 1380159), (27, 766755), (33, 627345), (45, 460053), (55, 376407), (81, 255585), (99, 209115), (135, 153351), (165, 125469), (243, 85195), (297, 69705), (405, 51117), (495, 41823), (891, 23235), (1215, 17039), (1485, 13941), (1549, 13365), (2673, 7745), (4455, 4647)]