209785940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1579}}^1$

素因数の和:1681

約数の個数: 96

約数和(自身を含む): 549991680

約数和(自身を除く): 340205740

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 73, 91, 130, 140, 146, 182, 260, 292, 364, 365, 455, 511, 730, 910, 949, 1022, 1460, 1579, 1820, 1898, 2044, 2555, 3158, 3796, 4745, 5110, 6316, 6643, 7895, 9490, 10220, 11053, 13286, 15790, 18980, 20527, 22106, 26572, 31580, 33215, 41054, 44212, 55265, 66430, 82108, 102635, 110530, 115267, 132860, 143689, 205270, 221060, 230534, 287378, 410540, 461068, 574756, 576335, 718445, 806869, 1152670, 1436890, 1498471, 1613738, 2305340, 2873780, 2996942, 3227476, 4034345, 5993884, 7492355, 8068690, 10489297, 14984710, 16137380, 20978594, 29969420, 41957188, 52446485, 104892970, 209785940]

約数ペア:

[(1, 209785940), (2, 104892970), (4, 52446485), (5, 41957188), (7, 29969420), (10, 20978594), (13, 16137380), (14, 14984710), (20, 10489297), (26, 8068690), (28, 7492355), (35, 5993884), (52, 4034345), (65, 3227476), (70, 2996942), (73, 2873780), (91, 2305340), (130, 1613738), (140, 1498471), (146, 1436890), (182, 1152670), (260, 806869), (292, 718445), (364, 576335), (365, 574756), (455, 461068), (511, 410540), (730, 287378), (910, 230534), (949, 221060), (1022, 205270), (1460, 143689), (1579, 132860), (1820, 115267), (1898, 110530), (2044, 102635), (2555, 82108), (3158, 66430), (3796, 55265), (4745, 44212), (5110, 41054), (6316, 33215), (6643, 31580), (7895, 26572), (9490, 22106), (10220, 20527), (11053, 18980), (13286, 15790)]