257121540

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:484

約数の個数: 240

約数和(自身を含む): 900733680

約数和(自身を除く): 643612140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 29, 30, 36, 39, 45, 52, 54, 58, 60, 65, 78, 81, 87, 90, 108, 116, 117, 130, 135, 145, 156, 162, 174, 180, 195, 234, 260, 261, 270, 290, 324, 348, 351, 377, 390, 405, 421, 435, 468, 522, 540, 580, 585, 702, 754, 780, 783, 810, 842, 870, 1044, 1053, 1131, 1170, 1263, 1305, 1404, 1508, 1566, 1620, 1684, 1740, 1755, 1885, 2105, 2106, 2262, 2340, 2349, 2526, 2610, 3132, 3393, 3510, 3770, 3789, 3915, 4210, 4212, 4524, 4698, 5052, 5220, 5265, 5473, 5655, 6315, 6786, 7020, 7540, 7578, 7830, 8420, 9396, 10179, 10530, 10946, 11310, 11367, 11745, 12209, 12630, 13572, 15156, 15660, 16419, 16965, 18945, 20358, 21060, 21892, 22620, 22734, 23490, 24418, 25260, 27365, 30537, 32838, 33930, 34101, 36627, 37890, 40716, 45468, 46980, 48836, 49257, 50895, 54730, 56835, 61045, 61074, 65676, 67860, 68202, 73254, 75780, 82095, 98514, 101790, 109460, 109881, 113670, 122090, 122148, 136404, 146508, 147771, 152685, 158717, 164190, 170505, 183135, 197028, 203580, 219762, 227340, 244180, 246285, 295542, 305370, 317434, 328380, 329643, 341010, 366270, 439524, 443313, 476151, 492570, 549405, 591084, 610740, 634868, 659286, 682020, 732540, 738855, 793585, 886626, 952302, 985140, 988929, 1098810, 1318572, 1428453, 1477710, 1587170, 1648215, 1773252, 1904604, 1977858, 2197620, 2216565, 2380755, 2856906, 2955420, 3174340, 3296430, 3955716, 4285359, 4433130, 4761510, 4944645, 5713812, 6592860, 7142265, 8570718, 8866260, 9523020, 9889290, 12856077, 14284530, 17141436, 19778580, 21426795, 25712154, 28569060, 42853590, 51424308, 64280385, 85707180, 128560770, 257121540]

約数ペア:

[(1, 257121540), (2, 128560770), (3, 85707180), (4, 64280385), (5, 51424308), (6, 42853590), (9, 28569060), (10, 25712154), (12, 21426795), (13, 19778580), (15, 17141436), (18, 14284530), (20, 12856077), (26, 9889290), (27, 9523020), (29, 8866260), (30, 8570718), (36, 7142265), (39, 6592860), (45, 5713812), (52, 4944645), (54, 4761510), (58, 4433130), (60, 4285359), (65, 3955716), (78, 3296430), (81, 3174340), (87, 2955420), (90, 2856906), (108, 2380755), (116, 2216565), (117, 2197620), (130, 1977858), (135, 1904604), (145, 1773252), (156, 1648215), (162, 1587170), (174, 1477710), (180, 1428453), (195, 1318572), (234, 1098810), (260, 988929), (261, 985140), (270, 952302), (290, 886626), (324, 793585), (348, 738855), (351, 732540), (377, 682020), (390, 659286), (405, 634868), (421, 610740), (435, 591084), (468, 549405), (522, 492570), (540, 476151), (580, 443313), (585, 439524), (702, 366270), (754, 341010), (780, 329643), (783, 328380), (810, 317434), (842, 305370), (870, 295542), (1044, 246285), (1053, 244180), (1131, 227340), (1170, 219762), (1263, 203580), (1305, 197028), (1404, 183135), (1508, 170505), (1566, 164190), (1620, 158717), (1684, 152685), (1740, 147771), (1755, 146508), (1885, 136404), (2105, 122148), (2106, 122090), (2262, 113670), (2340, 109881), (2349, 109460), (2526, 101790), (2610, 98514), (3132, 82095), (3393, 75780), (3510, 73254), (3770, 68202), (3789, 67860), (3915, 65676), (4210, 61074), (4212, 61045), (4524, 56835), (4698, 54730), (5052, 50895), (5220, 49257), (5265, 48836), (5473, 46980), (5655, 45468), (6315, 40716), (6786, 37890), (7020, 36627), (7540, 34101), (7578, 33930), (7830, 32838), (8420, 30537), (9396, 27365), (10179, 25260), (10530, 24418), (10946, 23490), (11310, 22734), (11367, 22620), (11745, 21892), (12209, 21060), (12630, 20358), (13572, 18945), (15156, 16965), (15660, 16419)]