21189123

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 35212320

約数和(自身を除く): 14023197

約数列:

[1, 3, 9, 17, 19, 37, 51, 57, 111, 153, 171, 197, 323, 333, 591, 629, 703, 969, 1773, 1887, 2109, 2907, 3349, 3743, 5661, 6327, 7289, 10047, 11229, 11951, 21867, 30141, 33687, 35853, 63631, 65601, 107559, 123913, 138491, 190893, 371739, 415473, 572679, 1115217, 1246419, 2354347, 7063041, 21189123]

約数ペア:

[(1, 21189123), (3, 7063041), (9, 2354347), (17, 1246419), (19, 1115217), (37, 572679), (51, 415473), (57, 371739), (111, 190893), (153, 138491), (171, 123913), (197, 107559), (323, 65601), (333, 63631), (591, 35853), (629, 33687), (703, 30141), (969, 21867), (1773, 11951), (1887, 11229), (2109, 10047), (2907, 7289), (3349, 6327), (3743, 5661)]