19742793

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{25409}}^1$

素因数の和:25456

約数の個数: 16

約数和(自身を含む): 30898560

約数和(自身を除く): 11155767

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 25409, 76227, 177863, 533589, 940133, 2820399, 6580931, 19742793]

約数ペア:

[(1, 19742793), (3, 6580931), (7, 2820399), (21, 940133), (37, 533589), (111, 177863), (259, 76227), (777, 25409)]