81705065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{641}}^1$

素因数の和:749

約数の個数: 32

約数和(自身を含む): 110660256

約数和(自身を除く): 28955191

約数列:

[1, 5, 13, 37, 53, 65, 185, 265, 481, 641, 689, 1961, 2405, 3205, 3445, 8333, 9805, 23717, 25493, 33973, 41665, 118585, 127465, 169865, 308321, 441649, 1257001, 1541605, 2208245, 6285005, 16341013, 81705065]

約数ペア:

[(1, 81705065), (5, 16341013), (13, 6285005), (37, 2208245), (53, 1541605), (65, 1257001), (185, 441649), (265, 308321), (481, 169865), (641, 127465), (689, 118585), (1961, 41665), (2405, 33973), (3205, 25493), (3445, 23717), (8333, 9805)]