257401080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:478

約数の個数: 192

約数和(自身を含む): 895134240

約数和(自身を除く): 637733160

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, 137, 153, 170, 180, 204, 255, 274, 306, 307, 340, 360, 408, 411, 510, 548, 612, 614, 680, 685, 765, 822, 921, 1020, 1096, 1224, 1228, 1233, 1370, 1530, 1535, 1644, 1842, 2040, 2055, 2329, 2456, 2466, 2740, 2763, 3060, 3070, 3288, 3684, 4110, 4605, 4658, 4932, 5219, 5480, 5526, 6120, 6140, 6165, 6987, 7368, 8220, 9210, 9316, 9864, 10438, 11052, 11645, 12280, 12330, 13815, 13974, 15657, 16440, 18420, 18632, 20876, 20961, 22104, 23290, 24660, 26095, 27630, 27948, 31314, 34935, 36840, 41752, 41922, 42059, 46580, 46971, 49320, 52190, 55260, 55896, 62628, 69870, 78285, 83844, 84118, 93160, 93942, 104380, 104805, 110520, 125256, 126177, 139740, 156570, 167688, 168236, 187884, 208760, 209610, 210295, 234855, 252354, 279480, 313140, 336472, 375768, 378531, 419220, 420590, 469710, 504708, 626280, 630885, 715003, 757062, 838440, 841180, 939420, 1009416, 1261770, 1430006, 1514124, 1682360, 1878840, 1892655, 2145009, 2523540, 2860012, 3028248, 3575015, 3785310, 4290018, 5047080, 5720024, 6435027, 7150030, 7570620, 8580036, 10725045, 12870054, 14300060, 15141240, 17160072, 21450090, 25740108, 28600120, 32175135, 42900180, 51480216, 64350270, 85800360, 128700540, 257401080]

約数ペア:

[(1, 257401080), (2, 128700540), (3, 85800360), (4, 64350270), (5, 51480216), (6, 42900180), (8, 32175135), (9, 28600120), (10, 25740108), (12, 21450090), (15, 17160072), (17, 15141240), (18, 14300060), (20, 12870054), (24, 10725045), (30, 8580036), (34, 7570620), (36, 7150030), (40, 6435027), (45, 5720024), (51, 5047080), (60, 4290018), (68, 3785310), (72, 3575015), (85, 3028248), (90, 2860012), (102, 2523540), (120, 2145009), (136, 1892655), (137, 1878840), (153, 1682360), (170, 1514124), (180, 1430006), (204, 1261770), (255, 1009416), (274, 939420), (306, 841180), (307, 838440), (340, 757062), (360, 715003), (408, 630885), (411, 626280), (510, 504708), (548, 469710), (612, 420590), (614, 419220), (680, 378531), (685, 375768), (765, 336472), (822, 313140), (921, 279480), (1020, 252354), (1096, 234855), (1224, 210295), (1228, 209610), (1233, 208760), (1370, 187884), (1530, 168236), (1535, 167688), (1644, 156570), (1842, 139740), (2040, 126177), (2055, 125256), (2329, 110520), (2456, 104805), (2466, 104380), (2740, 93942), (2763, 93160), (3060, 84118), (3070, 83844), (3288, 78285), (3684, 69870), (4110, 62628), (4605, 55896), (4658, 55260), (4932, 52190), (5219, 49320), (5480, 46971), (5526, 46580), (6120, 42059), (6140, 41922), (6165, 41752), (6987, 36840), (7368, 34935), (8220, 31314), (9210, 27948), (9316, 27630), (9864, 26095), (10438, 24660), (11052, 23290), (11645, 22104), (12280, 20961), (12330, 20876), (13815, 18632), (13974, 18420), (15657, 16440)]