218425911

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{619}}^1$

素因数の和:704

約数の個数: 48

約数和(自身を含む): 347180160

約数和(自身を除く): 128754249

約数列:

[1, 3, 11, 17, 33, 37, 51, 111, 187, 289, 407, 561, 619, 629, 867, 1221, 1857, 1887, 3179, 6809, 6919, 9537, 10523, 10693, 20427, 20757, 22903, 31569, 32079, 68709, 115753, 117623, 178891, 251933, 347259, 352869, 389351, 536673, 755799, 1168053, 1967801, 4282861, 5903403, 6618967, 12848583, 19856901, 72808637, 218425911]

約数ペア:

[(1, 218425911), (3, 72808637), (11, 19856901), (17, 12848583), (33, 6618967), (37, 5903403), (51, 4282861), (111, 1967801), (187, 1168053), (289, 755799), (407, 536673), (561, 389351), (619, 352869), (629, 347259), (867, 251933), (1221, 178891), (1857, 117623), (1887, 115753), (3179, 68709), (6809, 32079), (6919, 31569), (9537, 22903), (10523, 20757), (10693, 20427)]