13981653

素因数分解:

$3^4\times 7^1\times {\mathrm{24659}}^1$

素因数の和:24678

約数の個数: 20

約数和(自身を含む): 23870880

約数和(自身を除く): 9889227

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 24659, 73977, 172613, 221931, 517839, 665793, 1553517, 1997379, 4660551, 13981653]

約数ペア:

[(1, 13981653), (3, 4660551), (7, 1997379), (9, 1553517), (21, 665793), (27, 517839), (63, 221931), (81, 172613), (189, 73977), (567, 24659)]