19778511

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{853}}^1$

素因数の和:1046

約数の個数: 16

約数和(自身を含む): 27054720

約数和(自身を除く): 7276209

約数列:

[1, 3, 59, 131, 177, 393, 853, 2559, 7729, 23187, 50327, 111743, 150981, 335229, 6592837, 19778511]

約数ペア:

[(1, 19778511), (3, 6592837), (59, 335229), (131, 150981), (177, 111743), (393, 50327), (853, 23187), (2559, 7729)]