261360970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{811}}^1$

素因数の和:935

約数の個数: 64

約数和(自身を含む): 528748416

約数和(自身を除く): 267387446

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 67, 74, 130, 134, 185, 335, 370, 481, 670, 811, 871, 962, 1622, 1742, 2405, 2479, 4055, 4355, 4810, 4958, 8110, 8710, 10543, 12395, 21086, 24790, 30007, 32227, 52715, 54337, 60014, 64454, 105430, 108674, 150035, 161135, 271685, 300070, 322270, 390091, 543370, 706381, 780182, 1412762, 1950455, 2010469, 3531905, 3900910, 4020938, 7063810, 10052345, 20104690, 26136097, 52272194, 130680485, 261360970]

約数ペア:

[(1, 261360970), (2, 130680485), (5, 52272194), (10, 26136097), (13, 20104690), (26, 10052345), (37, 7063810), (65, 4020938), (67, 3900910), (74, 3531905), (130, 2010469), (134, 1950455), (185, 1412762), (335, 780182), (370, 706381), (481, 543370), (670, 390091), (811, 322270), (871, 300070), (962, 271685), (1622, 161135), (1742, 150035), (2405, 108674), (2479, 105430), (4055, 64454), (4355, 60014), (4810, 54337), (4958, 52715), (8110, 32227), (8710, 30007), (10543, 24790), (12395, 21086)]