205438545

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:208

約数の個数: 128

約数和(自身を含む): 424972800

約数和(自身を除く): 219534255

約数列:

[1, 3, 5, 9, 13, 15, 19, 27, 39, 45, 57, 61, 65, 95, 101, 117, 135, 171, 183, 195, 247, 285, 303, 305, 351, 505, 513, 549, 585, 741, 793, 855, 909, 915, 1159, 1235, 1313, 1515, 1647, 1755, 1919, 2223, 2379, 2565, 2727, 2745, 3477, 3705, 3939, 3965, 4545, 5757, 5795, 6161, 6565, 6669, 7137, 8235, 9595, 10431, 11115, 11817, 11895, 13635, 15067, 17271, 17385, 18483, 19695, 21411, 24947, 28785, 30805, 31293, 33345, 35451, 35685, 45201, 51813, 52155, 55449, 59085, 74841, 75335, 80093, 86355, 92415, 107055, 117059, 124735, 135603, 156465, 166347, 177255, 224523, 226005, 240279, 259065, 277245, 351177, 374205, 400465, 406809, 585295, 673569, 678015, 720837, 831735, 1053531, 1122615, 1201395, 1521767, 1755885, 2034045, 2162511, 3160593, 3367845, 3604185, 4565301, 5267655, 7608835, 10812555, 13695903, 15802965, 22826505, 41087709, 68479515, 205438545]

約数ペア:

[(1, 205438545), (3, 68479515), (5, 41087709), (9, 22826505), (13, 15802965), (15, 13695903), (19, 10812555), (27, 7608835), (39, 5267655), (45, 4565301), (57, 3604185), (61, 3367845), (65, 3160593), (95, 2162511), (101, 2034045), (117, 1755885), (135, 1521767), (171, 1201395), (183, 1122615), (195, 1053531), (247, 831735), (285, 720837), (303, 678015), (305, 673569), (351, 585295), (505, 406809), (513, 400465), (549, 374205), (585, 351177), (741, 277245), (793, 259065), (855, 240279), (909, 226005), (915, 224523), (1159, 177255), (1235, 166347), (1313, 156465), (1515, 135603), (1647, 124735), (1755, 117059), (1919, 107055), (2223, 92415), (2379, 86355), (2565, 80093), (2727, 75335), (2745, 74841), (3477, 59085), (3705, 55449), (3939, 52155), (3965, 51813), (4545, 45201), (5757, 35685), (5795, 35451), (6161, 33345), (6565, 31293), (6669, 30805), (7137, 28785), (8235, 24947), (9595, 21411), (10431, 19695), (11115, 18483), (11817, 17385), (11895, 17271), (13635, 15067)]