21706839

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 19350441

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 53, 63, 77, 99, 159, 189, 197, 231, 297, 371, 477, 583, 591, 693, 1113, 1379, 1431, 1749, 1773, 2079, 2167, 3339, 4081, 4137, 5247, 5319, 6501, 10017, 10441, 12243, 12411, 15169, 15741, 19503, 31323, 36729, 37233, 45507, 58509, 73087, 93969, 110187, 114851, 136521, 219261, 281907, 344553, 409563, 657783, 803957, 1033659, 1973349, 2411871, 3100977, 7235613, 21706839]

約数ペア:

[(1, 21706839), (3, 7235613), (7, 3100977), (9, 2411871), (11, 1973349), (21, 1033659), (27, 803957), (33, 657783), (53, 409563), (63, 344553), (77, 281907), (99, 219261), (159, 136521), (189, 114851), (197, 110187), (231, 93969), (297, 73087), (371, 58509), (477, 45507), (583, 37233), (591, 36729), (693, 31323), (1113, 19503), (1379, 15741), (1431, 15169), (1749, 12411), (1773, 12243), (2079, 10441), (2167, 10017), (3339, 6501), (4081, 5319), (4137, 5247)]