19307421

素因数分解:

$3^2\times 7^2\times {\mathrm{43781}}^1$

素因数の和:43801

約数の個数: 18

約数和(自身を含む): 32442462

約数和(自身を除く): 13135041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 43781, 131343, 306467, 394029, 919401, 2145269, 2758203, 6435807, 19307421]

約数ペア:

[(1, 19307421), (3, 6435807), (7, 2758203), (9, 2145269), (21, 919401), (49, 394029), (63, 306467), (147, 131343), (441, 43781)]