255220420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:139

約数の個数: 216

約数和(自身を含む): 714982464

約数和(自身を除く): 459762044

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 35, 46, 49, 52, 65, 67, 70, 91, 92, 98, 115, 130, 134, 140, 161, 169, 182, 196, 230, 245, 260, 268, 299, 322, 335, 338, 364, 455, 460, 469, 490, 598, 637, 644, 670, 676, 805, 845, 871, 910, 938, 980, 1127, 1183, 1196, 1274, 1340, 1495, 1541, 1610, 1690, 1742, 1820, 1876, 2093, 2254, 2345, 2366, 2548, 2990, 3082, 3185, 3220, 3283, 3380, 3484, 3887, 4186, 4355, 4508, 4690, 4732, 5635, 5915, 5980, 6097, 6164, 6370, 6566, 7705, 7774, 8281, 8372, 8710, 9380, 10465, 10787, 11270, 11323, 11830, 12194, 12740, 13132, 14651, 15410, 15548, 16415, 16562, 17420, 19435, 20033, 20930, 21574, 22540, 22646, 23660, 24388, 27209, 29302, 30485, 30820, 32830, 33124, 38870, 40066, 41405, 41860, 42679, 43148, 45292, 53935, 54418, 56615, 58604, 60970, 65660, 73255, 75509, 77740, 79261, 80132, 82810, 85358, 100165, 107870, 108836, 113230, 121940, 136045, 140231, 146510, 151018, 158522, 165620, 170716, 190463, 200330, 213395, 215740, 226460, 260429, 272090, 280462, 293020, 302036, 317044, 377545, 380926, 396305, 400660, 426790, 520858, 544180, 554827, 560924, 701155, 755090, 761852, 792610, 853580, 952315, 981617, 1041716, 1109654, 1302145, 1402310, 1510180, 1585220, 1823003, 1904630, 1963234, 2219308, 2604290, 2774135, 2804620, 3646006, 3809260, 3926468, 4908085, 5208580, 5548270, 7292012, 9115015, 9816170, 11096540, 12761021, 18230030, 19632340, 25522042, 36460060, 51044084, 63805105, 127610210, 255220420]

約数ペア:

[(1, 255220420), (2, 127610210), (4, 63805105), (5, 51044084), (7, 36460060), (10, 25522042), (13, 19632340), (14, 18230030), (20, 12761021), (23, 11096540), (26, 9816170), (28, 9115015), (35, 7292012), (46, 5548270), (49, 5208580), (52, 4908085), (65, 3926468), (67, 3809260), (70, 3646006), (91, 2804620), (92, 2774135), (98, 2604290), (115, 2219308), (130, 1963234), (134, 1904630), (140, 1823003), (161, 1585220), (169, 1510180), (182, 1402310), (196, 1302145), (230, 1109654), (245, 1041716), (260, 981617), (268, 952315), (299, 853580), (322, 792610), (335, 761852), (338, 755090), (364, 701155), (455, 560924), (460, 554827), (469, 544180), (490, 520858), (598, 426790), (637, 400660), (644, 396305), (670, 380926), (676, 377545), (805, 317044), (845, 302036), (871, 293020), (910, 280462), (938, 272090), (980, 260429), (1127, 226460), (1183, 215740), (1196, 213395), (1274, 200330), (1340, 190463), (1495, 170716), (1541, 165620), (1610, 158522), (1690, 151018), (1742, 146510), (1820, 140231), (1876, 136045), (2093, 121940), (2254, 113230), (2345, 108836), (2366, 107870), (2548, 100165), (2990, 85358), (3082, 82810), (3185, 80132), (3220, 79261), (3283, 77740), (3380, 75509), (3484, 73255), (3887, 65660), (4186, 60970), (4355, 58604), (4508, 56615), (4690, 54418), (4732, 53935), (5635, 45292), (5915, 43148), (5980, 42679), (6097, 41860), (6164, 41405), (6370, 40066), (6566, 38870), (7705, 33124), (7774, 32830), (8281, 30820), (8372, 30485), (8710, 29302), (9380, 27209), (10465, 24388), (10787, 23660), (11270, 22646), (11323, 22540), (11830, 21574), (12194, 20930), (12740, 20033), (13132, 19435), (14651, 17420), (15410, 16562), (15548, 16415)]