1991231463

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{709}}^1$

素因数の和:880

約数の個数: 64

約数和(自身を含む): 3114639360

約数和(自身を除く): 1123407897

約数列:

[1, 3, 13, 23, 31, 39, 69, 93, 101, 299, 303, 403, 709, 713, 897, 1209, 1313, 2127, 2139, 2323, 3131, 3939, 6969, 9217, 9269, 9393, 16307, 21979, 27651, 27807, 30199, 40703, 48921, 65937, 71609, 72013, 90597, 122109, 211991, 214827, 216039, 285727, 505517, 635973, 857181, 930917, 936169, 1516551, 1647007, 2219879, 2792751, 2808507, 4941021, 6571721, 6659637, 19715163, 21411091, 28858427, 51057217, 64233273, 86575281, 153171651, 663743821, 1991231463]

約数ペア:

[(1, 1991231463), (3, 663743821), (13, 153171651), (23, 86575281), (31, 64233273), (39, 51057217), (69, 28858427), (93, 21411091), (101, 19715163), (299, 6659637), (303, 6571721), (403, 4941021), (709, 2808507), (713, 2792751), (897, 2219879), (1209, 1647007), (1313, 1516551), (2127, 936169), (2139, 930917), (2323, 857181), (3131, 635973), (3939, 505517), (6969, 285727), (9217, 216039), (9269, 214827), (9393, 211991), (16307, 122109), (21979, 90597), (27651, 72013), (27807, 71609), (30199, 65937), (40703, 48921)]