20980053

素因数分解:

$3^4\times {\mathrm{179}}^1\times {\mathrm{1447}}^1$

素因数の和:1638

約数の個数: 20

約数和(自身を含む): 31537440

約数和(自身を除く): 10557387

約数列:

[1, 3, 9, 27, 81, 179, 537, 1447, 1611, 4341, 4833, 13023, 14499, 39069, 117207, 259013, 777039, 2331117, 6993351, 20980053]

約数ペア:

[(1, 20980053), (3, 6993351), (9, 2331117), (27, 777039), (81, 259013), (179, 117207), (537, 39069), (1447, 14499), (1611, 13023), (4341, 4833)]