21191280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{349}}^1$

素因数の和:399

約数の個数: 160

約数和(自身を含む): 74995200

約数和(自身を除く): 53803920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 23, 24, 30, 33, 40, 44, 46, 48, 55, 60, 66, 69, 80, 88, 92, 110, 115, 120, 132, 138, 165, 176, 184, 220, 230, 240, 253, 264, 276, 330, 345, 349, 368, 440, 460, 506, 528, 552, 660, 690, 698, 759, 880, 920, 1012, 1047, 1104, 1265, 1320, 1380, 1396, 1518, 1745, 1840, 2024, 2094, 2530, 2640, 2760, 2792, 3036, 3490, 3795, 3839, 4048, 4188, 5060, 5235, 5520, 5584, 6072, 6980, 7590, 7678, 8027, 8376, 10120, 10470, 11517, 12144, 13960, 15180, 15356, 16054, 16752, 19195, 20240, 20940, 23034, 24081, 27920, 30360, 30712, 32108, 38390, 40135, 41880, 46068, 48162, 57585, 60720, 61424, 64216, 76780, 80270, 83760, 88297, 92136, 96324, 115170, 120405, 128432, 153560, 160540, 176594, 184272, 192648, 230340, 240810, 264891, 307120, 321080, 353188, 385296, 441485, 460680, 481620, 529782, 642160, 706376, 882970, 921360, 963240, 1059564, 1324455, 1412752, 1765940, 1926480, 2119128, 2648910, 3531880, 4238256, 5297820, 7063760, 10595640, 21191280]

約数ペア:

[(1, 21191280), (2, 10595640), (3, 7063760), (4, 5297820), (5, 4238256), (6, 3531880), (8, 2648910), (10, 2119128), (11, 1926480), (12, 1765940), (15, 1412752), (16, 1324455), (20, 1059564), (22, 963240), (23, 921360), (24, 882970), (30, 706376), (33, 642160), (40, 529782), (44, 481620), (46, 460680), (48, 441485), (55, 385296), (60, 353188), (66, 321080), (69, 307120), (80, 264891), (88, 240810), (92, 230340), (110, 192648), (115, 184272), (120, 176594), (132, 160540), (138, 153560), (165, 128432), (176, 120405), (184, 115170), (220, 96324), (230, 92136), (240, 88297), (253, 83760), (264, 80270), (276, 76780), (330, 64216), (345, 61424), (349, 60720), (368, 57585), (440, 48162), (460, 46068), (506, 41880), (528, 40135), (552, 38390), (660, 32108), (690, 30712), (698, 30360), (759, 27920), (880, 24081), (920, 23034), (1012, 20940), (1047, 20240), (1104, 19195), (1265, 16752), (1320, 16054), (1380, 15356), (1396, 15180), (1518, 13960), (1745, 12144), (1840, 11517), (2024, 10470), (2094, 10120), (2530, 8376), (2640, 8027), (2760, 7678), (2792, 7590), (3036, 6980), (3490, 6072), (3795, 5584), (3839, 5520), (4048, 5235), (4188, 5060)]