20871180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 70447104

約数和(自身を除く): 49575924

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 83, 90, 99, 110, 127, 132, 165, 166, 180, 198, 220, 249, 254, 330, 332, 381, 396, 415, 495, 498, 508, 635, 660, 747, 762, 830, 913, 990, 996, 1143, 1245, 1270, 1397, 1494, 1524, 1660, 1826, 1905, 1980, 2286, 2490, 2540, 2739, 2794, 2988, 3652, 3735, 3810, 4191, 4565, 4572, 4980, 5478, 5588, 5715, 6985, 7470, 7620, 8217, 8382, 9130, 10541, 10956, 11430, 12573, 13695, 13970, 14940, 16434, 16764, 18260, 20955, 21082, 22860, 25146, 27390, 27940, 31623, 32868, 41085, 41910, 42164, 50292, 52705, 54780, 62865, 63246, 82170, 83820, 94869, 105410, 115951, 125730, 126492, 158115, 164340, 189738, 210820, 231902, 251460, 316230, 347853, 379476, 463804, 474345, 579755, 632460, 695706, 948690, 1043559, 1159510, 1391412, 1739265, 1897380, 2087118, 2319020, 3478530, 4174236, 5217795, 6957060, 10435590, 20871180]

約数ペア:

[(1, 20871180), (2, 10435590), (3, 6957060), (4, 5217795), (5, 4174236), (6, 3478530), (9, 2319020), (10, 2087118), (11, 1897380), (12, 1739265), (15, 1391412), (18, 1159510), (20, 1043559), (22, 948690), (30, 695706), (33, 632460), (36, 579755), (44, 474345), (45, 463804), (55, 379476), (60, 347853), (66, 316230), (83, 251460), (90, 231902), (99, 210820), (110, 189738), (127, 164340), (132, 158115), (165, 126492), (166, 125730), (180, 115951), (198, 105410), (220, 94869), (249, 83820), (254, 82170), (330, 63246), (332, 62865), (381, 54780), (396, 52705), (415, 50292), (495, 42164), (498, 41910), (508, 41085), (635, 32868), (660, 31623), (747, 27940), (762, 27390), (830, 25146), (913, 22860), (990, 21082), (996, 20955), (1143, 18260), (1245, 16764), (1270, 16434), (1397, 14940), (1494, 13970), (1524, 13695), (1660, 12573), (1826, 11430), (1905, 10956), (1980, 10541), (2286, 9130), (2490, 8382), (2540, 8217), (2739, 7620), (2794, 7470), (2988, 6985), (3652, 5715), (3735, 5588), (3810, 5478), (4191, 4980), (4565, 4572)]