81957465

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{409}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 146724240

約数和(自身を除く): 64766775

約数列:

[1, 3, 5, 9, 15, 45, 61, 73, 183, 219, 305, 365, 409, 549, 657, 915, 1095, 1227, 2045, 2745, 3285, 3681, 4453, 6135, 13359, 18405, 22265, 24949, 29857, 40077, 66795, 74847, 89571, 124745, 149285, 200385, 224541, 268713, 374235, 447855, 1122705, 1343565, 1821277, 5463831, 9106385, 16391493, 27319155, 81957465]

約数ペア:

[(1, 81957465), (3, 27319155), (5, 16391493), (9, 9106385), (15, 5463831), (45, 1821277), (61, 1343565), (73, 1122705), (183, 447855), (219, 374235), (305, 268713), (365, 224541), (409, 200385), (549, 149285), (657, 124745), (915, 89571), (1095, 74847), (1227, 66795), (2045, 40077), (2745, 29857), (3285, 24949), (3681, 22265), (4453, 18405), (6135, 13359)]