81583775

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 130616640

約数和(自身を除く): 49032865

約数列:

[1, 5, 7, 13, 25, 35, 47, 49, 65, 91, 109, 175, 235, 245, 325, 329, 455, 545, 611, 637, 763, 1175, 1225, 1417, 1645, 2275, 2303, 2725, 3055, 3185, 3815, 4277, 5123, 5341, 7085, 8225, 9919, 11515, 15275, 15925, 19075, 21385, 25615, 26705, 29939, 35425, 35861, 49595, 57575, 66599, 69433, 106925, 128075, 133525, 149695, 179305, 247975, 251027, 332995, 347165, 466193, 748475, 896525, 1255135, 1664975, 1735825, 2330965, 3263351, 6275675, 11654825, 16316755, 81583775]

約数ペア:

[(1, 81583775), (5, 16316755), (7, 11654825), (13, 6275675), (25, 3263351), (35, 2330965), (47, 1735825), (49, 1664975), (65, 1255135), (91, 896525), (109, 748475), (175, 466193), (235, 347165), (245, 332995), (325, 251027), (329, 247975), (455, 179305), (545, 149695), (611, 133525), (637, 128075), (763, 106925), (1175, 69433), (1225, 66599), (1417, 57575), (1645, 49595), (2275, 35861), (2303, 35425), (2725, 29939), (3055, 26705), (3185, 25615), (3815, 21385), (4277, 19075), (5123, 15925), (5341, 15275), (7085, 11515), (8225, 9919)]