81961920

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:363

約数の個数: 168

約数和(自身を含む): 285292800

約数和(自身を除く): 203330880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 144, 149, 160, 180, 191, 192, 240, 288, 298, 320, 360, 382, 447, 480, 573, 576, 596, 720, 745, 764, 894, 955, 960, 1146, 1192, 1341, 1440, 1490, 1528, 1719, 1788, 1910, 2235, 2292, 2384, 2682, 2865, 2880, 2980, 3056, 3438, 3576, 3820, 4470, 4584, 4768, 5364, 5730, 5960, 6112, 6705, 6876, 7152, 7640, 8595, 8940, 9168, 9536, 10728, 11460, 11920, 12224, 13410, 13752, 14304, 15280, 17190, 17880, 18336, 21456, 22920, 23840, 26820, 27504, 28459, 28608, 30560, 34380, 35760, 36672, 42912, 45840, 47680, 53640, 55008, 56918, 61120, 68760, 71520, 85377, 85824, 91680, 107280, 110016, 113836, 137520, 142295, 143040, 170754, 183360, 214560, 227672, 256131, 275040, 284590, 341508, 426885, 429120, 455344, 512262, 550080, 569180, 683016, 853770, 910688, 1024524, 1138360, 1280655, 1366032, 1707540, 1821376, 2049048, 2276720, 2561310, 2732064, 3415080, 4098096, 4553440, 5122620, 5464128, 6830160, 8196192, 9106880, 10245240, 13660320, 16392384, 20490480, 27320640, 40980960, 81961920]

約数ペア:

[(1, 81961920), (2, 40980960), (3, 27320640), (4, 20490480), (5, 16392384), (6, 13660320), (8, 10245240), (9, 9106880), (10, 8196192), (12, 6830160), (15, 5464128), (16, 5122620), (18, 4553440), (20, 4098096), (24, 3415080), (30, 2732064), (32, 2561310), (36, 2276720), (40, 2049048), (45, 1821376), (48, 1707540), (60, 1366032), (64, 1280655), (72, 1138360), (80, 1024524), (90, 910688), (96, 853770), (120, 683016), (144, 569180), (149, 550080), (160, 512262), (180, 455344), (191, 429120), (192, 426885), (240, 341508), (288, 284590), (298, 275040), (320, 256131), (360, 227672), (382, 214560), (447, 183360), (480, 170754), (573, 143040), (576, 142295), (596, 137520), (720, 113836), (745, 110016), (764, 107280), (894, 91680), (955, 85824), (960, 85377), (1146, 71520), (1192, 68760), (1341, 61120), (1440, 56918), (1490, 55008), (1528, 53640), (1719, 47680), (1788, 45840), (1910, 42912), (2235, 36672), (2292, 35760), (2384, 34380), (2682, 30560), (2865, 28608), (2880, 28459), (2980, 27504), (3056, 26820), (3438, 23840), (3576, 22920), (3820, 21456), (4470, 18336), (4584, 17880), (4768, 17190), (5364, 15280), (5730, 14304), (5960, 13752), (6112, 13410), (6705, 12224), (6876, 11920), (7152, 11460), (7640, 10728), (8595, 9536), (8940, 9168)]