20807790075

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{281}}^1\times {\mathrm{349}}^1$

素因数の和:710

約数の個数: 144

約数和(自身を含む): 40094308800

約数和(自身を除く): 19286518725

約数列:

[1, 3, 5, 9, 15, 23, 25, 41, 45, 69, 75, 115, 123, 205, 207, 225, 281, 345, 349, 369, 575, 615, 843, 943, 1025, 1035, 1047, 1405, 1725, 1745, 1845, 2529, 2829, 3075, 3141, 4215, 4715, 5175, 5235, 6463, 7025, 8027, 8487, 8725, 9225, 11521, 12645, 14145, 14309, 15705, 19389, 21075, 23575, 24081, 26175, 32315, 34563, 40135, 42435, 42927, 57605, 58167, 63225, 70725, 71545, 72243, 78525, 96945, 98069, 103689, 120405, 128781, 161575, 172815, 200675, 212175, 214635, 264983, 288025, 290835, 294207, 329107, 357725, 361215, 484725, 490345, 518445, 602025, 643905, 794949, 864075, 882621, 987321, 1073175, 1324915, 1454175, 1471035, 1645535, 1806075, 2255587, 2384847, 2451725, 2592225, 2961963, 3219525, 3974745, 4020829, 4413105, 4936605, 6624575, 6766761, 7355175, 8227675, 11277935, 11924235, 12062487, 14809815, 19873725, 20104145, 20300283, 22065525, 24683025, 33833805, 36187461, 56389675, 59621175, 60312435, 74049075, 92479067, 100520725, 101501415, 169169025, 180937305, 277437201, 301562175, 462395335, 507507075, 832311603, 904686525, 1387186005, 2311976675, 4161558015, 6935930025, 20807790075]

約数ペア:

[(1, 20807790075), (3, 6935930025), (5, 4161558015), (9, 2311976675), (15, 1387186005), (23, 904686525), (25, 832311603), (41, 507507075), (45, 462395335), (69, 301562175), (75, 277437201), (115, 180937305), (123, 169169025), (205, 101501415), (207, 100520725), (225, 92479067), (281, 74049075), (345, 60312435), (349, 59621175), (369, 56389675), (575, 36187461), (615, 33833805), (843, 24683025), (943, 22065525), (1025, 20300283), (1035, 20104145), (1047, 19873725), (1405, 14809815), (1725, 12062487), (1745, 11924235), (1845, 11277935), (2529, 8227675), (2829, 7355175), (3075, 6766761), (3141, 6624575), (4215, 4936605), (4715, 4413105), (5175, 4020829), (5235, 3974745), (6463, 3219525), (7025, 2961963), (8027, 2592225), (8487, 2451725), (8725, 2384847), (9225, 2255587), (11521, 1806075), (12645, 1645535), (14145, 1471035), (14309, 1454175), (15705, 1324915), (19389, 1073175), (21075, 987321), (23575, 882621), (24081, 864075), (26175, 794949), (32315, 643905), (34563, 602025), (40135, 518445), (42435, 490345), (42927, 484725), (57605, 361215), (58167, 357725), (63225, 329107), (70725, 294207), (71545, 290835), (72243, 288025), (78525, 264983), (96945, 214635), (98069, 212175), (103689, 200675), (120405, 172815), (128781, 161575)]