20771245

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 28563840

約数和(自身を除く): 7792595

約数列:

[1, 5, 11, 37, 55, 59, 173, 185, 295, 407, 649, 865, 1903, 2035, 2183, 3245, 6401, 9515, 10207, 10915, 24013, 32005, 51035, 70411, 112277, 120065, 352055, 377659, 561385, 1888295, 4154249, 20771245]

約数ペア:

[(1, 20771245), (5, 4154249), (11, 1888295), (37, 561385), (55, 377659), (59, 352055), (173, 120065), (185, 112277), (295, 70411), (407, 51035), (649, 32005), (865, 24013), (1903, 10915), (2035, 10207), (2183, 9515), (3245, 6401)]