20646780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:180

約数の個数: 192

約数和(自身を含む): 74511360

約数和(自身を除く): 53864580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 41, 42, 44, 55, 60, 66, 70, 77, 82, 84, 105, 109, 110, 123, 132, 140, 154, 164, 165, 205, 210, 218, 220, 231, 246, 287, 308, 327, 330, 385, 410, 420, 436, 451, 462, 492, 545, 574, 615, 654, 660, 763, 770, 820, 861, 902, 924, 1090, 1148, 1155, 1199, 1230, 1308, 1353, 1435, 1526, 1540, 1635, 1722, 1804, 2180, 2255, 2289, 2310, 2398, 2460, 2706, 2870, 3052, 3157, 3270, 3444, 3597, 3815, 4305, 4469, 4510, 4578, 4620, 4796, 5412, 5740, 5995, 6314, 6540, 6765, 7194, 7630, 8393, 8610, 8938, 9020, 9156, 9471, 11445, 11990, 12628, 13407, 13530, 14388, 15260, 15785, 16786, 17220, 17876, 17985, 18942, 22345, 22890, 23980, 25179, 26814, 27060, 31283, 31570, 33572, 35970, 37884, 41965, 44690, 45780, 47355, 49159, 50358, 53628, 62566, 63140, 67035, 71940, 83930, 89380, 93849, 94710, 98318, 100716, 125132, 125895, 134070, 147477, 156415, 167860, 187698, 189420, 196636, 245795, 251790, 268140, 294954, 312830, 344113, 375396, 469245, 491590, 503580, 589908, 625660, 688226, 737385, 938490, 983180, 1032339, 1376452, 1474770, 1720565, 1876980, 2064678, 2949540, 3441130, 4129356, 5161695, 6882260, 10323390, 20646780]

約数ペア:

[(1, 20646780), (2, 10323390), (3, 6882260), (4, 5161695), (5, 4129356), (6, 3441130), (7, 2949540), (10, 2064678), (11, 1876980), (12, 1720565), (14, 1474770), (15, 1376452), (20, 1032339), (21, 983180), (22, 938490), (28, 737385), (30, 688226), (33, 625660), (35, 589908), (41, 503580), (42, 491590), (44, 469245), (55, 375396), (60, 344113), (66, 312830), (70, 294954), (77, 268140), (82, 251790), (84, 245795), (105, 196636), (109, 189420), (110, 187698), (123, 167860), (132, 156415), (140, 147477), (154, 134070), (164, 125895), (165, 125132), (205, 100716), (210, 98318), (218, 94710), (220, 93849), (231, 89380), (246, 83930), (287, 71940), (308, 67035), (327, 63140), (330, 62566), (385, 53628), (410, 50358), (420, 49159), (436, 47355), (451, 45780), (462, 44690), (492, 41965), (545, 37884), (574, 35970), (615, 33572), (654, 31570), (660, 31283), (763, 27060), (770, 26814), (820, 25179), (861, 23980), (902, 22890), (924, 22345), (1090, 18942), (1148, 17985), (1155, 17876), (1199, 17220), (1230, 16786), (1308, 15785), (1353, 15260), (1435, 14388), (1526, 13530), (1540, 13407), (1635, 12628), (1722, 11990), (1804, 11445), (2180, 9471), (2255, 9156), (2289, 9020), (2310, 8938), (2398, 8610), (2460, 8393), (2706, 7630), (2870, 7194), (3052, 6765), (3157, 6540), (3270, 6314), (3444, 5995), (3597, 5740), (3815, 5412), (4305, 4796), (4469, 4620), (4510, 4578)]