21911981

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{619}}^1$

素因数の和:1028

約数の個数: 16

約数和(自身を含む): 27081600

約数和(自身を除く): 5169619

約数列:

[1, 7, 13, 91, 389, 619, 2723, 4333, 5057, 8047, 35399, 56329, 240791, 1685537, 3130283, 21911981]

約数ペア:

[(1, 21911981), (7, 3130283), (13, 1685537), (91, 240791), (389, 56329), (619, 35399), (2723, 8047), (4333, 5057)]