18561825

素因数分解:

$3^3\times 5^2\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:383

約数の個数: 48

約数和(自身を含む): 34551360

約数和(自身を除く): 15989535

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 107, 135, 225, 257, 321, 535, 675, 771, 963, 1285, 1605, 2313, 2675, 2889, 3855, 4815, 6425, 6939, 8025, 11565, 14445, 19275, 24075, 27499, 34695, 57825, 72225, 82497, 137495, 173475, 247491, 412485, 687475, 742473, 1237455, 2062425, 3712365, 6187275, 18561825]

約数ペア:

[(1, 18561825), (3, 6187275), (5, 3712365), (9, 2062425), (15, 1237455), (25, 742473), (27, 687475), (45, 412485), (75, 247491), (107, 173475), (135, 137495), (225, 82497), (257, 72225), (321, 57825), (535, 34695), (675, 27499), (771, 24075), (963, 19275), (1285, 14445), (1605, 11565), (2313, 8025), (2675, 6939), (2889, 6425), (3855, 4815)]