18893475

素因数分解:

$3^2\times 5^2\times {\mathrm{131}}^1\times {\mathrm{641}}^1$

素因数の和:788

約数の個数: 36

約数和(自身を含む): 34151832

約数和(自身を除く): 15258357

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 131, 225, 393, 641, 655, 1179, 1923, 1965, 3205, 3275, 5769, 5895, 9615, 9825, 16025, 28845, 29475, 48075, 83971, 144225, 251913, 419855, 755739, 1259565, 2099275, 3778695, 6297825, 18893475]

約数ペア:

[(1, 18893475), (3, 6297825), (5, 3778695), (9, 2099275), (15, 1259565), (25, 755739), (45, 419855), (75, 251913), (131, 144225), (225, 83971), (393, 48075), (641, 29475), (655, 28845), (1179, 16025), (1923, 9825), (1965, 9615), (3205, 5895), (3275, 5769)]