21084910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26815250

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 139, 154, 197, 278, 385, 394, 695, 770, 973, 985, 1379, 1390, 1529, 1946, 1970, 2167, 2758, 3058, 4334, 4865, 6895, 7645, 9730, 10703, 10835, 13790, 15169, 15290, 21406, 21670, 27383, 30338, 53515, 54766, 75845, 107030, 136915, 151690, 191681, 273830, 301213, 383362, 602426, 958405, 1506065, 1916810, 2108491, 3012130, 4216982, 10542455, 21084910]

約数ペア:

[(1, 21084910), (2, 10542455), (5, 4216982), (7, 3012130), (10, 2108491), (11, 1916810), (14, 1506065), (22, 958405), (35, 602426), (55, 383362), (70, 301213), (77, 273830), (110, 191681), (139, 151690), (154, 136915), (197, 107030), (278, 75845), (385, 54766), (394, 53515), (695, 30338), (770, 27383), (973, 21670), (985, 21406), (1379, 15290), (1390, 15169), (1529, 13790), (1946, 10835), (1970, 10703), (2167, 9730), (2758, 7645), (3058, 6895), (4334, 4865)]