28170387

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{3001}}^1$

素因数の和:3163

約数の個数: 24

約数和(自身を含む): 46831200

約数和(自身を除く): 18660813

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 3001, 3129, 9003, 9387, 21007, 27009, 63021, 189063, 447149, 1341447, 3130043, 4024341, 9390129, 28170387]

約数ペア:

[(1, 28170387), (3, 9390129), (7, 4024341), (9, 3130043), (21, 1341447), (63, 447149), (149, 189063), (447, 63021), (1043, 27009), (1341, 21007), (3001, 9387), (3129, 9003)]