21553766

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{12373}}^1$

素因数の和:12455

約数の個数: 16

約数和(自身を含む): 35340144

約数和(自身を除く): 13786378

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 12373, 24746, 160849, 321698, 828991, 1657982, 10776883, 21553766]

約数ペア:

[(1, 21553766), (2, 10776883), (13, 1657982), (26, 828991), (67, 321698), (134, 160849), (871, 24746), (1742, 12373)]