25721995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1289}}^1$

素因数の和:1614

約数の個数: 16

約数和(自身を含む): 33374880

約数和(自身を除く): 7652885

約数列:

[1, 5, 13, 65, 307, 1289, 1535, 3991, 6445, 16757, 19955, 83785, 395723, 1978615, 5144399, 25721995]

約数ペア:

[(1, 25721995), (5, 5144399), (13, 1978615), (65, 395723), (307, 83785), (1289, 19955), (1535, 16757), (3991, 6445)]