20398365

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:283

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 19518435

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 59, 65, 117, 135, 177, 195, 197, 295, 351, 531, 585, 591, 767, 885, 985, 1593, 1755, 1773, 2301, 2561, 2655, 2955, 3835, 5319, 6903, 7683, 7965, 8865, 11505, 11623, 12805, 20709, 23049, 26595, 34515, 34869, 38415, 58115, 69147, 103545, 104607, 115245, 151099, 174345, 313821, 345735, 453297, 523035, 755495, 1359891, 1569105, 2266485, 4079673, 6799455, 20398365]

約数ペア:

[(1, 20398365), (3, 6799455), (5, 4079673), (9, 2266485), (13, 1569105), (15, 1359891), (27, 755495), (39, 523035), (45, 453297), (59, 345735), (65, 313821), (117, 174345), (135, 151099), (177, 115245), (195, 104607), (197, 103545), (295, 69147), (351, 58115), (531, 38415), (585, 34869), (591, 34515), (767, 26595), (885, 23049), (985, 20709), (1593, 12805), (1755, 11623), (1773, 11505), (2301, 8865), (2561, 7965), (2655, 7683), (2955, 6903), (3835, 5319)]