19539845

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{6991}}^1$

素因数の和:7052

約数の個数: 16

約数和(自身を含む): 25842432

約数和(自身を除く): 6302587

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 6991, 34955, 90883, 300613, 454415, 1503065, 3907969, 19539845]

約数ペア:

[(1, 19539845), (5, 3907969), (13, 1503065), (43, 454415), (65, 300613), (215, 90883), (559, 34955), (2795, 6991)]