21077685

素因数分解:

$3^3\times 5^1\times {\mathrm{156131}}^1$

素因数の和:156145

約数の個数: 16

約数和(自身を含む): 37471680

約数和(自身を除く): 16393995

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 156131, 468393, 780655, 1405179, 2341965, 4215537, 7025895, 21077685]

約数ペア:

[(1, 21077685), (3, 7025895), (5, 4215537), (9, 2341965), (15, 1405179), (27, 780655), (45, 468393), (135, 156131)]