208820520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{229}}^1$

素因数の和:412

約数の個数: 192

約数和(自身を含む): 726570000

約数和(自身を除く): 517749480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 60, 68, 72, 85, 90, 102, 120, 136, 149, 153, 170, 180, 204, 229, 255, 298, 306, 340, 360, 408, 447, 458, 510, 596, 612, 680, 687, 745, 765, 894, 916, 1020, 1145, 1192, 1224, 1341, 1374, 1490, 1530, 1788, 1832, 2040, 2061, 2235, 2290, 2533, 2682, 2748, 2980, 3060, 3435, 3576, 3893, 4122, 4470, 4580, 5066, 5364, 5496, 5960, 6120, 6705, 6870, 7599, 7786, 8244, 8940, 9160, 10132, 10305, 10728, 11679, 12665, 13410, 13740, 15198, 15572, 16488, 17880, 19465, 20264, 20610, 22797, 23358, 25330, 26820, 27480, 30396, 31144, 34121, 35037, 37995, 38930, 41220, 45594, 46716, 50660, 53640, 58395, 60792, 68242, 70074, 75990, 77860, 82440, 91188, 93432, 101320, 102363, 113985, 116790, 136484, 140148, 151980, 155720, 170605, 175185, 182376, 204726, 227970, 233580, 272968, 280296, 303960, 307089, 341210, 350370, 409452, 455940, 467160, 511815, 580057, 614178, 682420, 700740, 818904, 911880, 1023630, 1160114, 1228356, 1364840, 1401480, 1535445, 1740171, 2047260, 2320228, 2456712, 2900285, 3070890, 3480342, 4094520, 4640456, 5220513, 5800570, 6141780, 6960684, 8700855, 10441026, 11601140, 12283560, 13921368, 17401710, 20882052, 23202280, 26102565, 34803420, 41764104, 52205130, 69606840, 104410260, 208820520]

約数ペア:

[(1, 208820520), (2, 104410260), (3, 69606840), (4, 52205130), (5, 41764104), (6, 34803420), (8, 26102565), (9, 23202280), (10, 20882052), (12, 17401710), (15, 13921368), (17, 12283560), (18, 11601140), (20, 10441026), (24, 8700855), (30, 6960684), (34, 6141780), (36, 5800570), (40, 5220513), (45, 4640456), (51, 4094520), (60, 3480342), (68, 3070890), (72, 2900285), (85, 2456712), (90, 2320228), (102, 2047260), (120, 1740171), (136, 1535445), (149, 1401480), (153, 1364840), (170, 1228356), (180, 1160114), (204, 1023630), (229, 911880), (255, 818904), (298, 700740), (306, 682420), (340, 614178), (360, 580057), (408, 511815), (447, 467160), (458, 455940), (510, 409452), (596, 350370), (612, 341210), (680, 307089), (687, 303960), (745, 280296), (765, 272968), (894, 233580), (916, 227970), (1020, 204726), (1145, 182376), (1192, 175185), (1224, 170605), (1341, 155720), (1374, 151980), (1490, 140148), (1530, 136484), (1788, 116790), (1832, 113985), (2040, 102363), (2061, 101320), (2235, 93432), (2290, 91188), (2533, 82440), (2682, 77860), (2748, 75990), (2980, 70074), (3060, 68242), (3435, 60792), (3576, 58395), (3893, 53640), (4122, 50660), (4470, 46716), (4580, 45594), (5066, 41220), (5364, 38930), (5496, 37995), (5960, 35037), (6120, 34121), (6705, 31144), (6870, 30396), (7599, 27480), (7786, 26820), (8244, 25330), (8940, 23358), (9160, 22797), (10132, 20610), (10305, 20264), (10728, 19465), (11679, 17880), (12665, 16488), (13410, 15572), (13740, 15198)]