19964139

素因数分解:

$3^1\times {\mathrm{13}}^4\times {\mathrm{233}}^1$

素因数の和:288

約数の個数: 20

約数和(自身を含む): 28960776

約数和(自身を除く): 8996637

約数列:

[1, 3, 13, 39, 169, 233, 507, 699, 2197, 3029, 6591, 9087, 28561, 39377, 85683, 118131, 511901, 1535703, 6654713, 19964139]

約数ペア:

[(1, 19964139), (3, 6654713), (13, 1535703), (39, 511901), (169, 118131), (233, 85683), (507, 39377), (699, 28561), (2197, 9087), (3029, 6591)]