81804905

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7817}}^1$

素因数の和:7865

約数の個数: 32

約数和(自身を含む): 126088704

約数和(自身を除く): 44283799

約数列:

[1, 5, 7, 13, 23, 35, 65, 91, 115, 161, 299, 455, 805, 1495, 2093, 7817, 10465, 39085, 54719, 101621, 179791, 273595, 508105, 711347, 898955, 1258537, 2337283, 3556735, 6292685, 11686415, 16360981, 81804905]

約数ペア:

[(1, 81804905), (5, 16360981), (7, 11686415), (13, 6292685), (23, 3556735), (35, 2337283), (65, 1258537), (91, 898955), (115, 711347), (161, 508105), (299, 273595), (455, 179791), (805, 101621), (1495, 54719), (2093, 39085), (7817, 10465)]