81581437

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{173}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 102228480

約数和(自身を除く): 20647043

約数列:

[1, 7, 23, 29, 101, 161, 173, 203, 667, 707, 1211, 2323, 2929, 3979, 4669, 5017, 16261, 17473, 20503, 27853, 35119, 67367, 115391, 122311, 401879, 471569, 506717, 807737, 2813153, 3547019, 11654491, 81581437]

約数ペア:

[(1, 81581437), (7, 11654491), (23, 3547019), (29, 2813153), (101, 807737), (161, 506717), (173, 471569), (203, 401879), (667, 122311), (707, 115391), (1211, 67367), (2323, 35119), (2929, 27853), (3979, 20503), (4669, 17473), (5017, 16261)]