261385740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18859}}^1$

素因数の和:18892

約数の個数: 144

約数和(自身を含む): 988565760

約数和(自身を除く): 727180020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1540, 1980, 2310, 2772, 3465, 4620, 6930, 13860, 18859, 37718, 56577, 75436, 94295, 113154, 132013, 169731, 188590, 207449, 226308, 264026, 282885, 339462, 377180, 396039, 414898, 528052, 565770, 622347, 660065, 678924, 792078, 829796, 848655, 1037245, 1131540, 1188117, 1244694, 1320130, 1452143, 1584156, 1697310, 1867041, 1980195, 2074490, 2376234, 2489388, 2640260, 2904286, 3111735, 3394620, 3734082, 3960390, 4148980, 4356429, 4752468, 5808572, 5940585, 6223470, 7260715, 7468164, 7920780, 8712858, 9335205, 11881170, 12446940, 13069287, 14521430, 17425716, 18670410, 21782145, 23762340, 26138574, 29042860, 37340820, 43564290, 52277148, 65346435, 87128580, 130692870, 261385740]

約数ペア:

[(1, 261385740), (2, 130692870), (3, 87128580), (4, 65346435), (5, 52277148), (6, 43564290), (7, 37340820), (9, 29042860), (10, 26138574), (11, 23762340), (12, 21782145), (14, 18670410), (15, 17425716), (18, 14521430), (20, 13069287), (21, 12446940), (22, 11881170), (28, 9335205), (30, 8712858), (33, 7920780), (35, 7468164), (36, 7260715), (42, 6223470), (44, 5940585), (45, 5808572), (55, 4752468), (60, 4356429), (63, 4148980), (66, 3960390), (70, 3734082), (77, 3394620), (84, 3111735), (90, 2904286), (99, 2640260), (105, 2489388), (110, 2376234), (126, 2074490), (132, 1980195), (140, 1867041), (154, 1697310), (165, 1584156), (180, 1452143), (198, 1320130), (210, 1244694), (220, 1188117), (231, 1131540), (252, 1037245), (308, 848655), (315, 829796), (330, 792078), (385, 678924), (396, 660065), (420, 622347), (462, 565770), (495, 528052), (630, 414898), (660, 396039), (693, 377180), (770, 339462), (924, 282885), (990, 264026), (1155, 226308), (1260, 207449), (1386, 188590), (1540, 169731), (1980, 132013), (2310, 113154), (2772, 94295), (3465, 75436), (4620, 56577), (6930, 37718), (13860, 18859)]