1971439920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1721}}^1$

素因数の和:1820

約数の個数: 240

約数和(自身を含む): 6961866912

約数和(自身を除く): 4990426992

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 37, 40, 43, 45, 48, 60, 72, 74, 80, 86, 90, 111, 120, 129, 144, 148, 172, 180, 185, 215, 222, 240, 258, 296, 333, 344, 360, 370, 387, 430, 444, 516, 555, 592, 645, 666, 688, 720, 740, 774, 860, 888, 1032, 1110, 1290, 1332, 1480, 1548, 1591, 1665, 1720, 1721, 1776, 1935, 2064, 2220, 2580, 2664, 2960, 3096, 3182, 3330, 3440, 3442, 3870, 4440, 4773, 5160, 5163, 5328, 6192, 6364, 6660, 6884, 7740, 7955, 8605, 8880, 9546, 10320, 10326, 12728, 13320, 13768, 14319, 15480, 15489, 15910, 17210, 19092, 20652, 23865, 25456, 25815, 26640, 27536, 28638, 30960, 30978, 31820, 34420, 38184, 41304, 47730, 51630, 57276, 61956, 63640, 63677, 68840, 71595, 74003, 76368, 77445, 82608, 95460, 103260, 114552, 123912, 127280, 127354, 137680, 143190, 148006, 154890, 190920, 191031, 206520, 222009, 229104, 247824, 254708, 286380, 296012, 309780, 318385, 370015, 381840, 382062, 413040, 444018, 509416, 572760, 573093, 592024, 619560, 636770, 666027, 740030, 764124, 888036, 955155, 1018832, 1110045, 1145520, 1146186, 1184048, 1239120, 1273540, 1332054, 1480060, 1528248, 1776072, 1910310, 2220090, 2292372, 2547080, 2664108, 2738111, 2865465, 2960120, 3056496, 3330135, 3552144, 3820620, 4440180, 4584744, 5094160, 5328216, 5476222, 5730930, 5920240, 6660270, 7641240, 8214333, 8880360, 9169488, 10656432, 10952444, 11461860, 13320540, 13690555, 15282480, 16428666, 17760720, 21904888, 22923720, 24642999, 26641080, 27381110, 32857332, 41071665, 43809776, 45847440, 49285998, 53282160, 54762220, 65714664, 82143330, 98571996, 109524440, 123214995, 131429328, 164286660, 197143992, 219048880, 246429990, 328573320, 394287984, 492859980, 657146640, 985719960, 1971439920]

約数ペア:

[(1, 1971439920), (2, 985719960), (3, 657146640), (4, 492859980), (5, 394287984), (6, 328573320), (8, 246429990), (9, 219048880), (10, 197143992), (12, 164286660), (15, 131429328), (16, 123214995), (18, 109524440), (20, 98571996), (24, 82143330), (30, 65714664), (36, 54762220), (37, 53282160), (40, 49285998), (43, 45847440), (45, 43809776), (48, 41071665), (60, 32857332), (72, 27381110), (74, 26641080), (80, 24642999), (86, 22923720), (90, 21904888), (111, 17760720), (120, 16428666), (129, 15282480), (144, 13690555), (148, 13320540), (172, 11461860), (180, 10952444), (185, 10656432), (215, 9169488), (222, 8880360), (240, 8214333), (258, 7641240), (296, 6660270), (333, 5920240), (344, 5730930), (360, 5476222), (370, 5328216), (387, 5094160), (430, 4584744), (444, 4440180), (516, 3820620), (555, 3552144), (592, 3330135), (645, 3056496), (666, 2960120), (688, 2865465), (720, 2738111), (740, 2664108), (774, 2547080), (860, 2292372), (888, 2220090), (1032, 1910310), (1110, 1776072), (1290, 1528248), (1332, 1480060), (1480, 1332054), (1548, 1273540), (1591, 1239120), (1665, 1184048), (1720, 1146186), (1721, 1145520), (1776, 1110045), (1935, 1018832), (2064, 955155), (2220, 888036), (2580, 764124), (2664, 740030), (2960, 666027), (3096, 636770), (3182, 619560), (3330, 592024), (3440, 573093), (3442, 572760), (3870, 509416), (4440, 444018), (4773, 413040), (5160, 382062), (5163, 381840), (5328, 370015), (6192, 318385), (6364, 309780), (6660, 296012), (6884, 286380), (7740, 254708), (7955, 247824), (8605, 229104), (8880, 222009), (9546, 206520), (10320, 191031), (10326, 190920), (12728, 154890), (13320, 148006), (13768, 143190), (14319, 137680), (15480, 127354), (15489, 127280), (15910, 123912), (17210, 114552), (19092, 103260), (20652, 95460), (23865, 82608), (25456, 77445), (25815, 76368), (26640, 74003), (27536, 71595), (28638, 68840), (30960, 63677), (30978, 63640), (31820, 61956), (34420, 57276), (38184, 51630), (41304, 47730)]