81720495

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:354

約数の個数: 80

約数和(自身を含む): 158349312

約数和(自身を除く): 76628817

約数列:

[1, 3, 5, 9, 15, 23, 27, 31, 45, 69, 81, 93, 115, 135, 155, 207, 279, 283, 345, 405, 465, 621, 713, 837, 849, 1035, 1395, 1415, 1863, 2139, 2511, 2547, 3105, 3565, 4185, 4245, 6417, 6509, 7641, 8773, 9315, 10695, 12555, 12735, 19251, 19527, 22923, 26319, 32085, 32545, 38205, 43865, 57753, 58581, 78957, 96255, 97635, 114615, 131595, 175743, 201779, 236871, 288765, 292905, 394785, 527229, 605337, 710613, 878715, 1008895, 1184355, 1816011, 2636145, 3026685, 3553065, 5448033, 9080055, 16344099, 27240165, 81720495]

約数ペア:

[(1, 81720495), (3, 27240165), (5, 16344099), (9, 9080055), (15, 5448033), (23, 3553065), (27, 3026685), (31, 2636145), (45, 1816011), (69, 1184355), (81, 1008895), (93, 878715), (115, 710613), (135, 605337), (155, 527229), (207, 394785), (279, 292905), (283, 288765), (345, 236871), (405, 201779), (465, 175743), (621, 131595), (713, 114615), (837, 97635), (849, 96255), (1035, 78957), (1395, 58581), (1415, 57753), (1863, 43865), (2139, 38205), (2511, 32545), (2547, 32085), (3105, 26319), (3565, 22923), (4185, 19527), (4245, 19251), (6417, 12735), (6509, 12555), (7641, 10695), (8773, 9315)]