20194119

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{149}}^1$

素因数の和:240

約数の個数: 36

約数和(自身を含む): 32923800

約数和(自身を除く): 12729681

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 149, 333, 407, 447, 1221, 1341, 1369, 1639, 3663, 4107, 4917, 5513, 12321, 14751, 15059, 16539, 45177, 49617, 60643, 135531, 181929, 203981, 545787, 611943, 1835829, 2243791, 6731373, 20194119]

約数ペア:

[(1, 20194119), (3, 6731373), (9, 2243791), (11, 1835829), (33, 611943), (37, 545787), (99, 203981), (111, 181929), (149, 135531), (333, 60643), (407, 49617), (447, 45177), (1221, 16539), (1341, 15059), (1369, 14751), (1639, 12321), (3663, 5513), (4107, 4917)]