21854160

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1$

素因数の和:385

約数の個数: 120

約数和(自身を含む): 74280960

約数和(自身を除く): 52426800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 127, 144, 180, 239, 240, 254, 360, 381, 478, 508, 635, 717, 720, 762, 956, 1016, 1143, 1195, 1270, 1434, 1524, 1905, 1912, 2032, 2151, 2286, 2390, 2540, 2868, 3048, 3585, 3810, 3824, 4302, 4572, 4780, 5080, 5715, 5736, 6096, 7170, 7620, 8604, 9144, 9560, 10160, 10755, 11430, 11472, 14340, 15240, 17208, 18288, 19120, 21510, 22860, 28680, 30353, 30480, 34416, 43020, 45720, 57360, 60706, 86040, 91059, 91440, 121412, 151765, 172080, 182118, 242824, 273177, 303530, 364236, 455295, 485648, 546354, 607060, 728472, 910590, 1092708, 1214120, 1365885, 1456944, 1821180, 2185416, 2428240, 2731770, 3642360, 4370832, 5463540, 7284720, 10927080, 21854160]

約数ペア:

[(1, 21854160), (2, 10927080), (3, 7284720), (4, 5463540), (5, 4370832), (6, 3642360), (8, 2731770), (9, 2428240), (10, 2185416), (12, 1821180), (15, 1456944), (16, 1365885), (18, 1214120), (20, 1092708), (24, 910590), (30, 728472), (36, 607060), (40, 546354), (45, 485648), (48, 455295), (60, 364236), (72, 303530), (80, 273177), (90, 242824), (120, 182118), (127, 172080), (144, 151765), (180, 121412), (239, 91440), (240, 91059), (254, 86040), (360, 60706), (381, 57360), (478, 45720), (508, 43020), (635, 34416), (717, 30480), (720, 30353), (762, 28680), (956, 22860), (1016, 21510), (1143, 19120), (1195, 18288), (1270, 17208), (1434, 15240), (1524, 14340), (1905, 11472), (1912, 11430), (2032, 10755), (2151, 10160), (2286, 9560), (2390, 9144), (2540, 8604), (2868, 7620), (3048, 7170), (3585, 6096), (3810, 5736), (3824, 5715), (4302, 5080), (4572, 4780)]