21421206.000000000

素因数分解:

$2^6\times 3^2\times {\mathrm{31}}^1\times {\mathrm{8663}}^1$

素因数の和:8712

約数の個数: 84

約数和(自身を含む): 457736448

約数和(自身を除く): 303049920

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 48, 62, 64, 72, 93, 96, 124, 144, 186, 192, 248, 279, 288, 372, 496, 558, 576, 744, 992, 1116, 1488, 1984, 2232, 2976, 4464, 5952, 8663, 8928, 17326, 17856, 25989, 34652, 51978, 69304, 77967, 103956, 138608, 155934, 207912, 268553, 277216, 311868, 415824, 537106, 554432, 623736, 805659, 831648, 1074212, 1247472, 1611318, 1663296, 2148424, 2416977, 2494944, 3222636, 4296848, 4833954, 4989888, 6445272, 8593696, 9667908, 12890544, 17187392, 19335816, 25781088, 38671632, 51562176, 77343264, 154686528]

約数ペア:

[(1, 154686528), (2, 77343264), (3, 51562176), (4, 38671632), (6, 25781088), (8, 19335816), (9, 17187392), (12, 12890544), (16, 9667908), (18, 8593696), (24, 6445272), (31, 4989888), (32, 4833954), (36, 4296848), (48, 3222636), (62, 2494944), (64, 2416977), (72, 2148424), (93, 1663296), (96, 1611318), (124, 1247472), (144, 1074212), (186, 831648), (192, 805659), (248, 623736), (279, 554432), (288, 537106), (372, 415824), (496, 311868), (558, 277216), (576, 268553), (744, 207912), (992, 155934), (1116, 138608), (1488, 103956), (1984, 77967), (2232, 69304), (2976, 51978), (4464, 34652), (5952, 25989), (8663, 17856), (8928, 17326)]