221323795

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{461}}^1$

素因数の和:556

約数の個数: 64

約数和(自身を含む): 351267840

約数和(自身を除く): 129944045

約数列:

[1, 5, 7, 11, 29, 35, 43, 55, 77, 145, 203, 215, 301, 319, 385, 461, 473, 1015, 1247, 1505, 1595, 2233, 2305, 2365, 3227, 3311, 5071, 6235, 8729, 11165, 13369, 13717, 16135, 16555, 19823, 25355, 35497, 43645, 66845, 68585, 93583, 96019, 99115, 138761, 147059, 177485, 218053, 467915, 480095, 574867, 693805, 735295, 1029413, 1090265, 1526371, 2874335, 4024069, 5147065, 6323537, 7631855, 20120345, 31617685, 44264759, 221323795]

約数ペア:

[(1, 221323795), (5, 44264759), (7, 31617685), (11, 20120345), (29, 7631855), (35, 6323537), (43, 5147065), (55, 4024069), (77, 2874335), (145, 1526371), (203, 1090265), (215, 1029413), (301, 735295), (319, 693805), (385, 574867), (461, 480095), (473, 467915), (1015, 218053), (1247, 177485), (1505, 147059), (1595, 138761), (2233, 99115), (2305, 96019), (2365, 93583), (3227, 68585), (3311, 66845), (5071, 43645), (6235, 35497), (8729, 25355), (11165, 19823), (13369, 16555), (13717, 16135)]