155720257

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{653}}^1$

素因数の和:853

約数の個数: 32

約数和(自身を含む): 205931520

約数和(自身を除く): 50211263

約数列:

[1, 7, 11, 19, 77, 133, 163, 209, 653, 1141, 1463, 1793, 3097, 4571, 7183, 12407, 12551, 21679, 34067, 50281, 86849, 106439, 136477, 238469, 745073, 955339, 1170829, 2022341, 8195803, 14156387, 22245751, 155720257]

約数ペア:

[(1, 155720257), (7, 22245751), (11, 14156387), (19, 8195803), (77, 2022341), (133, 1170829), (163, 955339), (209, 745073), (653, 238469), (1141, 136477), (1463, 106439), (1793, 86849), (3097, 50281), (4571, 34067), (7183, 21679), (12407, 12551)]