19937995

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{51787}}^1$

素因数の和:51810

約数の個数: 16

約数和(自身を含む): 29829888

約数和(自身を除く): 9891893

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 51787, 258935, 362509, 569657, 1812545, 2848285, 3987599, 19937995]

約数ペア:

[(1, 19937995), (5, 3987599), (7, 2848285), (11, 1812545), (35, 569657), (55, 362509), (77, 258935), (385, 51787)]