21267935

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1013}}^1$

素因数の和:1067

約数の個数: 32

約数和(自身を含む): 30663360

約数和(自身を除く): 9395425

約数列:

[1, 5, 13, 17, 19, 65, 85, 95, 221, 247, 323, 1013, 1105, 1235, 1615, 4199, 5065, 13169, 17221, 19247, 20995, 65845, 86105, 96235, 223873, 250211, 327199, 1119365, 1251055, 1635995, 4253587, 21267935]

約数ペア:

[(1, 21267935), (5, 4253587), (13, 1635995), (17, 1251055), (19, 1119365), (65, 327199), (85, 250211), (95, 223873), (221, 96235), (247, 86105), (323, 65845), (1013, 20995), (1105, 19247), (1235, 17221), (1615, 13169), (4199, 5065)]