18129815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 24952320

約数和(自身を除く): 6822505

約数列:

[1, 5, 11, 37, 55, 59, 151, 185, 295, 407, 649, 755, 1661, 2035, 2183, 3245, 5587, 8305, 8909, 10915, 24013, 27935, 44545, 61457, 97999, 120065, 307285, 329633, 489995, 1648165, 3625963, 18129815]

約数ペア:

[(1, 18129815), (5, 3625963), (11, 1648165), (37, 489995), (55, 329633), (59, 307285), (151, 120065), (185, 97999), (295, 61457), (407, 44545), (649, 27935), (755, 24013), (1661, 10915), (2035, 8909), (2183, 8305), (3245, 5587)]