81881469

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 139104000

約数和(自身を除く): 57222531

約数列:

[1, 3, 9, 17, 19, 27, 41, 51, 57, 123, 153, 171, 229, 323, 369, 459, 513, 687, 697, 779, 969, 1107, 2061, 2091, 2337, 2907, 3893, 4351, 6183, 6273, 7011, 8721, 9389, 11679, 13053, 13243, 18819, 21033, 28167, 35037, 39159, 39729, 73967, 84501, 105111, 117477, 119187, 159613, 178391, 221901, 253503, 357561, 478839, 535173, 665703, 1436517, 1605519, 1997109, 3032647, 4309551, 4816557, 9097941, 27293823, 81881469]

約数ペア:

[(1, 81881469), (3, 27293823), (9, 9097941), (17, 4816557), (19, 4309551), (27, 3032647), (41, 1997109), (51, 1605519), (57, 1436517), (123, 665703), (153, 535173), (171, 478839), (229, 357561), (323, 253503), (369, 221901), (459, 178391), (513, 159613), (687, 119187), (697, 117477), (779, 105111), (969, 84501), (1107, 73967), (2061, 39729), (2091, 39159), (2337, 35037), (2907, 28167), (3893, 21033), (4351, 18819), (6183, 13243), (6273, 13053), (7011, 11679), (8721, 9389)]