19979055

素因数分解:

$3^4\times 5^1\times {\mathrm{49331}}^1$

素因数の和:49348

約数の個数: 20

約数和(自身を含む): 35815032

約数和(自身を除く): 15835977

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49331, 147993, 246655, 443979, 739965, 1331937, 2219895, 3995811, 6659685, 19979055]

約数ペア:

[(1, 19979055), (3, 6659685), (5, 3995811), (9, 2219895), (15, 1331937), (27, 739965), (45, 443979), (81, 246655), (135, 147993), (405, 49331)]