15781381

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:134

約数の個数: 48

約数和(自身を含む): 22325760

約数和(自身を除く): 6544379

約数列:

[1, 7, 11, 19, 23, 49, 67, 77, 133, 161, 209, 253, 437, 469, 539, 737, 931, 1127, 1273, 1463, 1541, 1771, 3059, 3283, 4807, 5159, 8911, 10241, 10787, 12397, 14003, 16951, 21413, 29279, 33649, 36113, 62377, 75509, 98021, 118657, 204953, 235543, 322069, 686147, 830599, 1434671, 2254483, 15781381]

約数ペア:

[(1, 15781381), (7, 2254483), (11, 1434671), (19, 830599), (23, 686147), (49, 322069), (67, 235543), (77, 204953), (133, 118657), (161, 98021), (209, 75509), (253, 62377), (437, 36113), (469, 33649), (539, 29279), (737, 21413), (931, 16951), (1127, 14003), (1273, 12397), (1463, 10787), (1541, 10241), (1771, 8911), (3059, 5159), (3283, 4807)]