21491076720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{19763}}^1$

素因数の和:19999

約数の個数: 160

約数和(自身を含む): 69875384832

約数和(自身を除く): 48384308112

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 197, 230, 240, 276, 345, 368, 394, 460, 552, 591, 690, 788, 920, 985, 1104, 1182, 1380, 1576, 1840, 1970, 2364, 2760, 2955, 3152, 3940, 4531, 4728, 5520, 5910, 7880, 9062, 9456, 11820, 13593, 15760, 18124, 19763, 22655, 23640, 27186, 36248, 39526, 45310, 47280, 54372, 59289, 67965, 72496, 79052, 90620, 98815, 108744, 118578, 135930, 158104, 181240, 197630, 217488, 237156, 271860, 296445, 316208, 362480, 395260, 454549, 474312, 543720, 592890, 790520, 909098, 948624, 1087440, 1185780, 1363647, 1581040, 1818196, 2272745, 2371560, 2727294, 3636392, 3893311, 4545490, 4743120, 5454588, 6818235, 7272784, 7786622, 9090980, 10909176, 11679933, 13636470, 15573244, 18181960, 19466555, 21818352, 23359866, 27272940, 31146488, 36363920, 38933110, 46719732, 54545880, 58399665, 62292976, 77866220, 89546153, 93439464, 109091760, 116799330, 155732440, 179092306, 186878928, 233598660, 268638459, 311464880, 358184612, 447730765, 467197320, 537276918, 716369224, 895461530, 934394640, 1074553836, 1343192295, 1432738448, 1790923060, 2149107672, 2686384590, 3581846120, 4298215344, 5372769180, 7163692240, 10745538360, 21491076720]

約数ペア:

[(1, 21491076720), (2, 10745538360), (3, 7163692240), (4, 5372769180), (5, 4298215344), (6, 3581846120), (8, 2686384590), (10, 2149107672), (12, 1790923060), (15, 1432738448), (16, 1343192295), (20, 1074553836), (23, 934394640), (24, 895461530), (30, 716369224), (40, 537276918), (46, 467197320), (48, 447730765), (60, 358184612), (69, 311464880), (80, 268638459), (92, 233598660), (115, 186878928), (120, 179092306), (138, 155732440), (184, 116799330), (197, 109091760), (230, 93439464), (240, 89546153), (276, 77866220), (345, 62292976), (368, 58399665), (394, 54545880), (460, 46719732), (552, 38933110), (591, 36363920), (690, 31146488), (788, 27272940), (920, 23359866), (985, 21818352), (1104, 19466555), (1182, 18181960), (1380, 15573244), (1576, 13636470), (1840, 11679933), (1970, 10909176), (2364, 9090980), (2760, 7786622), (2955, 7272784), (3152, 6818235), (3940, 5454588), (4531, 4743120), (4728, 4545490), (5520, 3893311), (5910, 3636392), (7880, 2727294), (9062, 2371560), (9456, 2272745), (11820, 1818196), (13593, 1581040), (15760, 1363647), (18124, 1185780), (19763, 1087440), (22655, 948624), (23640, 909098), (27186, 790520), (36248, 592890), (39526, 543720), (45310, 474312), (47280, 454549), (54372, 395260), (59289, 362480), (67965, 316208), (72496, 296445), (79052, 271860), (90620, 237156), (98815, 217488), (108744, 197630), (118578, 181240), (135930, 158104)]