21811113

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{4019}}^1$

素因数の和:4098

約数の個数: 20

約数和(自身を含む): 33076560

約数和(自身を除く): 11265447

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 4019, 5427, 12057, 36171, 108513, 269273, 325539, 807819, 2423457, 7270371, 21811113]

約数ペア:

[(1, 21811113), (3, 7270371), (9, 2423457), (27, 807819), (67, 325539), (81, 269273), (201, 108513), (603, 36171), (1809, 12057), (4019, 5427)]