28390817

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{103}}^1\times {\mathrm{233}}^1$

素因数の和:369

約数の個数: 24

約数和(自身を含む): 35627904

約数和(自身を除く): 7237087

約数列:

[1, 7, 13, 91, 103, 169, 233, 721, 1183, 1339, 1631, 3029, 9373, 17407, 21203, 23999, 39377, 121849, 167993, 275639, 311987, 2183909, 4055831, 28390817]

約数ペア:

[(1, 28390817), (7, 4055831), (13, 2183909), (91, 311987), (103, 275639), (169, 167993), (233, 121849), (721, 39377), (1183, 23999), (1339, 21203), (1631, 17407), (3029, 9373)]