81847025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{3547}}^1$

素因数の和:3641

約数の個数: 24

約数和(自身を含む): 110867904

約数和(自身を除く): 29020879

約数列:

[1, 5, 13, 25, 65, 71, 325, 355, 923, 1775, 3547, 4615, 17735, 23075, 46111, 88675, 230555, 251837, 1152775, 1259185, 3273881, 6295925, 16369405, 81847025]

約数ペア:

[(1, 81847025), (5, 16369405), (13, 6295925), (25, 3273881), (65, 1259185), (71, 1152775), (325, 251837), (355, 230555), (923, 88675), (1775, 46111), (3547, 23075), (4615, 17735)]