21071565

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20359}}^1$

素因数の和:20393

約数の個数: 24

約数和(自身を含む): 38113920

約数和(自身を除く): 17042355

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20359, 61077, 101795, 183231, 305385, 468257, 916155, 1404771, 2341285, 4214313, 7023855, 21071565]

約数ペア:

[(1, 21071565), (3, 7023855), (5, 4214313), (9, 2341285), (15, 1404771), (23, 916155), (45, 468257), (69, 305385), (115, 183231), (207, 101795), (345, 61077), (1035, 20359)]