19707975

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:166

約数の個数: 96

約数和(自身を含む): 42775040

約数和(自身を除く): 23067065

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 43, 45, 63, 75, 97, 105, 129, 135, 175, 189, 215, 225, 291, 301, 315, 387, 485, 525, 645, 675, 679, 873, 903, 945, 1075, 1161, 1455, 1505, 1575, 1935, 2037, 2425, 2619, 2709, 3225, 3395, 4171, 4365, 4515, 4725, 5805, 6111, 7275, 7525, 8127, 9675, 10185, 12513, 13095, 13545, 16975, 18333, 20855, 21825, 22575, 29025, 29197, 30555, 37539, 40635, 50925, 62565, 65475, 67725, 87591, 91665, 104275, 112617, 145985, 152775, 187695, 203175, 262773, 312825, 437955, 458325, 563085, 729925, 788319, 938475, 1313865, 2189775, 2815425, 3941595, 6569325, 19707975]

約数ペア:

[(1, 19707975), (3, 6569325), (5, 3941595), (7, 2815425), (9, 2189775), (15, 1313865), (21, 938475), (25, 788319), (27, 729925), (35, 563085), (43, 458325), (45, 437955), (63, 312825), (75, 262773), (97, 203175), (105, 187695), (129, 152775), (135, 145985), (175, 112617), (189, 104275), (215, 91665), (225, 87591), (291, 67725), (301, 65475), (315, 62565), (387, 50925), (485, 40635), (525, 37539), (645, 30555), (675, 29197), (679, 29025), (873, 22575), (903, 21825), (945, 20855), (1075, 18333), (1161, 16975), (1455, 13545), (1505, 13095), (1575, 12513), (1935, 10185), (2037, 9675), (2425, 8127), (2619, 7525), (2709, 7275), (3225, 6111), (3395, 5805), (4171, 4725), (4365, 4515)]