21201285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8779}}^1$

素因数の和:8817

約数の個数: 32

約数和(自身を含む): 40458240

約数和(自身を除く): 19256955

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 8779, 26337, 43895, 61453, 131685, 184359, 201917, 307265, 605751, 921795, 1009585, 1413419, 3028755, 4240257, 7067095, 21201285]

約数ペア:

[(1, 21201285), (3, 7067095), (5, 4240257), (7, 3028755), (15, 1413419), (21, 1009585), (23, 921795), (35, 605751), (69, 307265), (105, 201917), (115, 184359), (161, 131685), (345, 61453), (483, 43895), (805, 26337), (2415, 8779)]