81618745

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 108605952

約数和(自身を除く): 26987207

約数列:

[1, 5, 13, 65, 73, 103, 167, 365, 515, 835, 949, 1339, 2171, 4745, 6695, 7519, 10855, 12191, 17201, 37595, 60955, 86005, 97747, 158483, 223613, 488735, 792415, 1118065, 1255673, 6278365, 16323749, 81618745]

約数ペア:

[(1, 81618745), (5, 16323749), (13, 6278365), (65, 1255673), (73, 1118065), (103, 792415), (167, 488735), (365, 223613), (515, 158483), (835, 97747), (949, 86005), (1339, 60955), (2171, 37595), (4745, 17201), (6695, 12191), (7519, 10855)]