20420160

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:348

約数の個数: 112

約数和(自身を含む): 65836800

約数和(自身を除く): 45416640

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, 160, 178, 192, 239, 240, 267, 320, 356, 445, 478, 480, 534, 712, 717, 890, 956, 960, 1068, 1195, 1335, 1424, 1434, 1780, 1912, 2136, 2390, 2670, 2848, 2868, 3560, 3585, 3824, 4272, 4780, 5340, 5696, 5736, 7120, 7170, 7648, 8544, 9560, 10680, 11472, 14240, 14340, 15296, 17088, 19120, 21271, 21360, 22944, 28480, 28680, 38240, 42542, 42720, 45888, 57360, 63813, 76480, 85084, 85440, 106355, 114720, 127626, 170168, 212710, 229440, 255252, 319065, 340336, 425420, 510504, 638130, 680672, 850840, 1021008, 1276260, 1361344, 1701680, 2042016, 2552520, 3403360, 4084032, 5105040, 6806720, 10210080, 20420160]

約数ペア:

[(1, 20420160), (2, 10210080), (3, 6806720), (4, 5105040), (5, 4084032), (6, 3403360), (8, 2552520), (10, 2042016), (12, 1701680), (15, 1361344), (16, 1276260), (20, 1021008), (24, 850840), (30, 680672), (32, 638130), (40, 510504), (48, 425420), (60, 340336), (64, 319065), (80, 255252), (89, 229440), (96, 212710), (120, 170168), (160, 127626), (178, 114720), (192, 106355), (239, 85440), (240, 85084), (267, 76480), (320, 63813), (356, 57360), (445, 45888), (478, 42720), (480, 42542), (534, 38240), (712, 28680), (717, 28480), (890, 22944), (956, 21360), (960, 21271), (1068, 19120), (1195, 17088), (1335, 15296), (1424, 14340), (1434, 14240), (1780, 11472), (1912, 10680), (2136, 9560), (2390, 8544), (2670, 7648), (2848, 7170), (2868, 7120), (3560, 5736), (3585, 5696), (3824, 5340), (4272, 4780)]