18987315

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43649}}^1$

素因数の和:43686

約数の個数: 16

約数和(自身を含む): 31428000

約数和(自身を除く): 12440685

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 43649, 130947, 218245, 654735, 1265821, 3797463, 6329105, 18987315]

約数ペア:

[(1, 18987315), (3, 6329105), (5, 3797463), (15, 1265821), (29, 654735), (87, 218245), (145, 130947), (435, 43649)]