640902720

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{227}}^1$

素因数の和:437

約数の個数: 224

約数和(自身を含む): 2176564608

約数和(自身を除く): 1535661888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 136, 160, 170, 173, 192, 204, 227, 240, 255, 272, 320, 340, 346, 408, 454, 480, 510, 519, 544, 680, 681, 692, 816, 865, 908, 960, 1020, 1038, 1088, 1135, 1360, 1362, 1384, 1632, 1730, 1816, 2040, 2076, 2270, 2595, 2720, 2724, 2768, 2941, 3264, 3405, 3460, 3632, 3859, 4080, 4152, 4540, 5190, 5440, 5448, 5536, 5882, 6810, 6920, 7264, 7718, 8160, 8304, 8823, 9080, 10380, 10896, 11072, 11577, 11764, 13620, 13840, 14528, 14705, 15436, 16320, 16608, 17646, 18160, 19295, 20760, 21792, 23154, 23528, 27240, 27680, 29410, 30872, 33216, 35292, 36320, 38590, 39271, 41520, 43584, 44115, 46308, 47056, 54480, 55360, 57885, 58820, 61744, 70584, 72640, 77180, 78542, 83040, 88230, 92616, 94112, 108960, 115770, 117640, 117813, 123488, 141168, 154360, 157084, 166080, 176460, 185232, 188224, 196355, 217920, 231540, 235280, 235626, 246976, 282336, 308720, 314168, 352920, 370464, 392710, 463080, 470560, 471252, 564672, 589065, 617440, 628336, 667607, 705840, 740928, 785420, 926160, 941120, 942504, 1178130, 1234880, 1256672, 1335214, 1411680, 1570840, 1852320, 1885008, 2002821, 2356260, 2513344, 2670428, 2823360, 3141680, 3338035, 3704640, 3770016, 4005642, 4712520, 5340856, 6283360, 6676070, 7540032, 8011284, 9425040, 10014105, 10681712, 12566720, 13352140, 16022568, 18850080, 20028210, 21363424, 26704280, 32045136, 37700160, 40056420, 42726848, 53408560, 64090272, 80112840, 106817120, 128180544, 160225680, 213634240, 320451360, 640902720]

約数ペア:

[(1, 640902720), (2, 320451360), (3, 213634240), (4, 160225680), (5, 128180544), (6, 106817120), (8, 80112840), (10, 64090272), (12, 53408560), (15, 42726848), (16, 40056420), (17, 37700160), (20, 32045136), (24, 26704280), (30, 21363424), (32, 20028210), (34, 18850080), (40, 16022568), (48, 13352140), (51, 12566720), (60, 10681712), (64, 10014105), (68, 9425040), (80, 8011284), (85, 7540032), (96, 6676070), (102, 6283360), (120, 5340856), (136, 4712520), (160, 4005642), (170, 3770016), (173, 3704640), (192, 3338035), (204, 3141680), (227, 2823360), (240, 2670428), (255, 2513344), (272, 2356260), (320, 2002821), (340, 1885008), (346, 1852320), (408, 1570840), (454, 1411680), (480, 1335214), (510, 1256672), (519, 1234880), (544, 1178130), (680, 942504), (681, 941120), (692, 926160), (816, 785420), (865, 740928), (908, 705840), (960, 667607), (1020, 628336), (1038, 617440), (1088, 589065), (1135, 564672), (1360, 471252), (1362, 470560), (1384, 463080), (1632, 392710), (1730, 370464), (1816, 352920), (2040, 314168), (2076, 308720), (2270, 282336), (2595, 246976), (2720, 235626), (2724, 235280), (2768, 231540), (2941, 217920), (3264, 196355), (3405, 188224), (3460, 185232), (3632, 176460), (3859, 166080), (4080, 157084), (4152, 154360), (4540, 141168), (5190, 123488), (5440, 117813), (5448, 117640), (5536, 115770), (5882, 108960), (6810, 94112), (6920, 92616), (7264, 88230), (7718, 83040), (8160, 78542), (8304, 77180), (8823, 72640), (9080, 70584), (10380, 61744), (10896, 58820), (11072, 57885), (11577, 55360), (11764, 54480), (13620, 47056), (13840, 46308), (14528, 44115), (14705, 43584), (15436, 41520), (16320, 39271), (16608, 38590), (17646, 36320), (18160, 35292), (19295, 33216), (20760, 30872), (21792, 29410), (23154, 27680), (23528, 27240)]