81650985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 147087360

約数和(自身を除く): 65436375

約数列:

[1, 3, 5, 13, 15, 39, 47, 59, 65, 141, 151, 177, 195, 235, 295, 453, 611, 705, 755, 767, 885, 1833, 1963, 2265, 2301, 2773, 3055, 3835, 5889, 7097, 8319, 8909, 9165, 9815, 11505, 13865, 21291, 26727, 29445, 35485, 36049, 41595, 44545, 92261, 106455, 108147, 115817, 133635, 180245, 276783, 347451, 418723, 461305, 540735, 579085, 1256169, 1383915, 1737255, 2093615, 5443399, 6280845, 16330197, 27216995, 81650985]

約数ペア:

[(1, 81650985), (3, 27216995), (5, 16330197), (13, 6280845), (15, 5443399), (39, 2093615), (47, 1737255), (59, 1383915), (65, 1256169), (141, 579085), (151, 540735), (177, 461305), (195, 418723), (235, 347451), (295, 276783), (453, 180245), (611, 133635), (705, 115817), (755, 108147), (767, 106455), (885, 92261), (1833, 44545), (1963, 41595), (2265, 36049), (2301, 35485), (2773, 29445), (3055, 26727), (3835, 21291), (5889, 13865), (7097, 11505), (8319, 9815), (8909, 9165)]