20065563

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{823}}^1$

素因数の和:885

約数の個数: 40

約数和(自身を含む): 35095808

約数和(自身を除く): 15030245

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 823, 903, 1161, 2469, 2709, 3483, 5761, 7407, 8127, 17283, 22221, 24381, 35389, 51849, 66663, 106167, 155547, 247723, 318501, 466641, 743169, 955503, 2229507, 2866509, 6688521, 20065563]

約数ペア:

[(1, 20065563), (3, 6688521), (7, 2866509), (9, 2229507), (21, 955503), (27, 743169), (43, 466641), (63, 318501), (81, 247723), (129, 155547), (189, 106167), (301, 66663), (387, 51849), (567, 35389), (823, 24381), (903, 22221), (1161, 17283), (2469, 8127), (2709, 7407), (3483, 5761)]