20118996885

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{367}}^1\times {\mathrm{719}}^1$

素因数の和:1147

約数の個数: 128

約数和(自身を含む): 38459473920

約数和(自身を除く): 18340477035

約数列:

[1, 3, 5, 13, 15, 17, 23, 39, 51, 65, 69, 85, 115, 195, 221, 255, 299, 345, 367, 391, 663, 719, 897, 1101, 1105, 1173, 1495, 1835, 1955, 2157, 3315, 3595, 4485, 4771, 5083, 5505, 5865, 6239, 8441, 9347, 10785, 12223, 14313, 15249, 16537, 18717, 23855, 25323, 25415, 28041, 31195, 36669, 42205, 46735, 49611, 61115, 71565, 76245, 81107, 82685, 93585, 109733, 126615, 140205, 143497, 158899, 183345, 214981, 243321, 248055, 263873, 281129, 329199, 405535, 430491, 476697, 548665, 644943, 717485, 791619, 794495, 843387, 1074905, 1216605, 1319365, 1405645, 1645995, 1865461, 2152455, 2383485, 3224715, 3430349, 3654677, 3958095, 4216935, 4485841, 5596383, 6069079, 9327305, 10291047, 10964031, 13457523, 17151745, 18207237, 18273385, 22429205, 27981915, 30345395, 51455235, 54820155, 58315933, 67287615, 78898027, 91036185, 103174343, 174947799, 236694081, 291579665, 309523029, 394490135, 515871715, 874738995, 1183470405, 1341266459, 1547615145, 4023799377, 6706332295, 20118996885]

約数ペア:

[(1, 20118996885), (3, 6706332295), (5, 4023799377), (13, 1547615145), (15, 1341266459), (17, 1183470405), (23, 874738995), (39, 515871715), (51, 394490135), (65, 309523029), (69, 291579665), (85, 236694081), (115, 174947799), (195, 103174343), (221, 91036185), (255, 78898027), (299, 67287615), (345, 58315933), (367, 54820155), (391, 51455235), (663, 30345395), (719, 27981915), (897, 22429205), (1101, 18273385), (1105, 18207237), (1173, 17151745), (1495, 13457523), (1835, 10964031), (1955, 10291047), (2157, 9327305), (3315, 6069079), (3595, 5596383), (4485, 4485841), (4771, 4216935), (5083, 3958095), (5505, 3654677), (5865, 3430349), (6239, 3224715), (8441, 2383485), (9347, 2152455), (10785, 1865461), (12223, 1645995), (14313, 1405645), (15249, 1319365), (16537, 1216605), (18717, 1074905), (23855, 843387), (25323, 794495), (25415, 791619), (28041, 717485), (31195, 644943), (36669, 548665), (42205, 476697), (46735, 430491), (49611, 405535), (61115, 329199), (71565, 281129), (76245, 263873), (81107, 248055), (82685, 243321), (93585, 214981), (109733, 183345), (126615, 158899), (140205, 143497)]