20551140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:202

約数の個数: 144

約数和(自身を含む): 67092480

約数和(自身を除く): 46541340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 31, 36, 45, 58, 60, 62, 87, 90, 93, 116, 124, 127, 145, 155, 174, 180, 186, 254, 261, 279, 290, 310, 348, 372, 381, 435, 465, 508, 522, 558, 580, 620, 635, 762, 870, 899, 930, 1044, 1116, 1143, 1270, 1305, 1395, 1524, 1740, 1798, 1860, 1905, 2286, 2540, 2610, 2697, 2790, 3596, 3683, 3810, 3937, 4495, 4572, 5220, 5394, 5580, 5715, 7366, 7620, 7874, 8091, 8990, 10788, 11049, 11430, 11811, 13485, 14732, 15748, 16182, 17980, 18415, 19685, 22098, 22860, 23622, 26970, 32364, 33147, 35433, 36830, 39370, 40455, 44196, 47244, 53940, 55245, 59055, 66294, 70866, 73660, 78740, 80910, 110490, 114173, 118110, 132588, 141732, 161820, 165735, 177165, 220980, 228346, 236220, 331470, 342519, 354330, 456692, 570865, 662940, 685038, 708660, 1027557, 1141730, 1370076, 1712595, 2055114, 2283460, 3425190, 4110228, 5137785, 6850380, 10275570, 20551140]

約数ペア:

[(1, 20551140), (2, 10275570), (3, 6850380), (4, 5137785), (5, 4110228), (6, 3425190), (9, 2283460), (10, 2055114), (12, 1712595), (15, 1370076), (18, 1141730), (20, 1027557), (29, 708660), (30, 685038), (31, 662940), (36, 570865), (45, 456692), (58, 354330), (60, 342519), (62, 331470), (87, 236220), (90, 228346), (93, 220980), (116, 177165), (124, 165735), (127, 161820), (145, 141732), (155, 132588), (174, 118110), (180, 114173), (186, 110490), (254, 80910), (261, 78740), (279, 73660), (290, 70866), (310, 66294), (348, 59055), (372, 55245), (381, 53940), (435, 47244), (465, 44196), (508, 40455), (522, 39370), (558, 36830), (580, 35433), (620, 33147), (635, 32364), (762, 26970), (870, 23622), (899, 22860), (930, 22098), (1044, 19685), (1116, 18415), (1143, 17980), (1270, 16182), (1305, 15748), (1395, 14732), (1524, 13485), (1740, 11811), (1798, 11430), (1860, 11049), (1905, 10788), (2286, 8990), (2540, 8091), (2610, 7874), (2697, 7620), (2790, 7366), (3596, 5715), (3683, 5580), (3810, 5394), (3937, 5220), (4495, 4572)]