21337920

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:293

約数の個数: 168

約数和(自身を含む): 76078080

約数和(自身を除く): 54740160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 62, 64, 72, 80, 90, 93, 96, 120, 124, 144, 155, 160, 180, 186, 192, 239, 240, 248, 279, 288, 310, 320, 360, 372, 465, 478, 480, 496, 558, 576, 620, 717, 720, 744, 930, 956, 960, 992, 1116, 1195, 1240, 1395, 1434, 1440, 1488, 1860, 1912, 1984, 2151, 2232, 2390, 2480, 2790, 2868, 2880, 2976, 3585, 3720, 3824, 4302, 4464, 4780, 4960, 5580, 5736, 5952, 7170, 7409, 7440, 7648, 8604, 8928, 9560, 9920, 10755, 11160, 11472, 14340, 14818, 14880, 15296, 17208, 17856, 19120, 21510, 22227, 22320, 22944, 28680, 29636, 29760, 34416, 37045, 38240, 43020, 44454, 44640, 45888, 57360, 59272, 66681, 68832, 74090, 76480, 86040, 88908, 89280, 111135, 114720, 118544, 133362, 137664, 148180, 172080, 177816, 222270, 229440, 237088, 266724, 296360, 333405, 344160, 355632, 444540, 474176, 533448, 592720, 666810, 688320, 711264, 889080, 1066896, 1185440, 1333620, 1422528, 1778160, 2133792, 2370880, 2667240, 3556320, 4267584, 5334480, 7112640, 10668960, 21337920]

約数ペア:

[(1, 21337920), (2, 10668960), (3, 7112640), (4, 5334480), (5, 4267584), (6, 3556320), (8, 2667240), (9, 2370880), (10, 2133792), (12, 1778160), (15, 1422528), (16, 1333620), (18, 1185440), (20, 1066896), (24, 889080), (30, 711264), (31, 688320), (32, 666810), (36, 592720), (40, 533448), (45, 474176), (48, 444540), (60, 355632), (62, 344160), (64, 333405), (72, 296360), (80, 266724), (90, 237088), (93, 229440), (96, 222270), (120, 177816), (124, 172080), (144, 148180), (155, 137664), (160, 133362), (180, 118544), (186, 114720), (192, 111135), (239, 89280), (240, 88908), (248, 86040), (279, 76480), (288, 74090), (310, 68832), (320, 66681), (360, 59272), (372, 57360), (465, 45888), (478, 44640), (480, 44454), (496, 43020), (558, 38240), (576, 37045), (620, 34416), (717, 29760), (720, 29636), (744, 28680), (930, 22944), (956, 22320), (960, 22227), (992, 21510), (1116, 19120), (1195, 17856), (1240, 17208), (1395, 15296), (1434, 14880), (1440, 14818), (1488, 14340), (1860, 11472), (1912, 11160), (1984, 10755), (2151, 9920), (2232, 9560), (2390, 8928), (2480, 8604), (2790, 7648), (2868, 7440), (2880, 7409), (2976, 7170), (3585, 5952), (3720, 5736), (3824, 5580), (4302, 4960), (4464, 4780)]