81680640

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:352

約数の個数: 144

約数和(自身を含む): 264902400

約数和(自身を除く): 183221760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 89, 96, 120, 128, 160, 178, 192, 239, 240, 256, 267, 320, 356, 384, 445, 478, 480, 534, 640, 712, 717, 768, 890, 956, 960, 1068, 1195, 1280, 1335, 1424, 1434, 1780, 1912, 1920, 2136, 2390, 2670, 2848, 2868, 3560, 3585, 3824, 3840, 4272, 4780, 5340, 5696, 5736, 7120, 7170, 7648, 8544, 9560, 10680, 11392, 11472, 14240, 14340, 15296, 17088, 19120, 21271, 21360, 22784, 22944, 28480, 28680, 30592, 34176, 38240, 42542, 42720, 45888, 56960, 57360, 61184, 63813, 68352, 76480, 85084, 85440, 91776, 106355, 113920, 114720, 127626, 152960, 170168, 170880, 183552, 212710, 229440, 255252, 305920, 319065, 340336, 341760, 425420, 458880, 510504, 638130, 680672, 850840, 917760, 1021008, 1276260, 1361344, 1701680, 2042016, 2552520, 2722688, 3403360, 4084032, 5105040, 5445376, 6806720, 8168064, 10210080, 13613440, 16336128, 20420160, 27226880, 40840320, 81680640]

約数ペア:

[(1, 81680640), (2, 40840320), (3, 27226880), (4, 20420160), (5, 16336128), (6, 13613440), (8, 10210080), (10, 8168064), (12, 6806720), (15, 5445376), (16, 5105040), (20, 4084032), (24, 3403360), (30, 2722688), (32, 2552520), (40, 2042016), (48, 1701680), (60, 1361344), (64, 1276260), (80, 1021008), (89, 917760), (96, 850840), (120, 680672), (128, 638130), (160, 510504), (178, 458880), (192, 425420), (239, 341760), (240, 340336), (256, 319065), (267, 305920), (320, 255252), (356, 229440), (384, 212710), (445, 183552), (478, 170880), (480, 170168), (534, 152960), (640, 127626), (712, 114720), (717, 113920), (768, 106355), (890, 91776), (956, 85440), (960, 85084), (1068, 76480), (1195, 68352), (1280, 63813), (1335, 61184), (1424, 57360), (1434, 56960), (1780, 45888), (1912, 42720), (1920, 42542), (2136, 38240), (2390, 34176), (2670, 30592), (2848, 28680), (2868, 28480), (3560, 22944), (3585, 22784), (3824, 21360), (3840, 21271), (4272, 19120), (4780, 17088), (5340, 15296), (5696, 14340), (5736, 14240), (7120, 11472), (7170, 11392), (7648, 10680), (8544, 9560)]