21386904

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:261

約数の個数: 128

約数和(自身を含む): 68014080

約数和(自身を除く): 46627176

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 66, 71, 77, 84, 88, 132, 142, 154, 163, 168, 213, 231, 264, 284, 308, 326, 426, 462, 489, 497, 568, 616, 652, 781, 852, 924, 978, 994, 1141, 1304, 1491, 1562, 1704, 1793, 1848, 1956, 1988, 2282, 2343, 2982, 3124, 3423, 3586, 3912, 3976, 4564, 4686, 5379, 5467, 5964, 6248, 6846, 7172, 9128, 9372, 10758, 10934, 11573, 11928, 12551, 13692, 14344, 16401, 18744, 21516, 21868, 23146, 25102, 27384, 32802, 34719, 37653, 43032, 43736, 46292, 50204, 65604, 69438, 75306, 81011, 92584, 100408, 127303, 131208, 138876, 150612, 162022, 243033, 254606, 277752, 301224, 324044, 381909, 486066, 509212, 648088, 763818, 891121, 972132, 1018424, 1527636, 1782242, 1944264, 2673363, 3055272, 3564484, 5346726, 7128968, 10693452, 21386904]

約数ペア:

[(1, 21386904), (2, 10693452), (3, 7128968), (4, 5346726), (6, 3564484), (7, 3055272), (8, 2673363), (11, 1944264), (12, 1782242), (14, 1527636), (21, 1018424), (22, 972132), (24, 891121), (28, 763818), (33, 648088), (42, 509212), (44, 486066), (56, 381909), (66, 324044), (71, 301224), (77, 277752), (84, 254606), (88, 243033), (132, 162022), (142, 150612), (154, 138876), (163, 131208), (168, 127303), (213, 100408), (231, 92584), (264, 81011), (284, 75306), (308, 69438), (326, 65604), (426, 50204), (462, 46292), (489, 43736), (497, 43032), (568, 37653), (616, 34719), (652, 32802), (781, 27384), (852, 25102), (924, 23146), (978, 21868), (994, 21516), (1141, 18744), (1304, 16401), (1491, 14344), (1562, 13692), (1704, 12551), (1793, 11928), (1848, 11573), (1956, 10934), (1988, 10758), (2282, 9372), (2343, 9128), (2982, 7172), (3124, 6846), (3423, 6248), (3586, 5964), (3912, 5467), (3976, 5379), (4564, 4686)]