28240849

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 36900864

約数和(自身を除く): 8660015

約数列:

[1, 7, 13, 23, 91, 103, 131, 161, 299, 721, 917, 1339, 1703, 2093, 2369, 3013, 9373, 11921, 13493, 16583, 21091, 30797, 39169, 94451, 175409, 215579, 274183, 310339, 1227863, 2172373, 4034407, 28240849]

約数ペア:

[(1, 28240849), (7, 4034407), (13, 2172373), (23, 1227863), (91, 310339), (103, 274183), (131, 215579), (161, 175409), (299, 94451), (721, 39169), (917, 30797), (1339, 21091), (1703, 16583), (2093, 13493), (2369, 11921), (3013, 9373)]