21761811

素因数分解:

$3^3\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:324

約数の個数: 32

約数和(自身を含む): 33400640

約数和(自身を除く): 11638829

約数列:

[1, 3, 9, 27, 61, 73, 181, 183, 219, 543, 549, 657, 1629, 1647, 1971, 4453, 4887, 11041, 13213, 13359, 33123, 39639, 40077, 99369, 118917, 120231, 298107, 356751, 805993, 2417979, 7253937, 21761811]

約数ペア:

[(1, 21761811), (3, 7253937), (9, 2417979), (27, 805993), (61, 356751), (73, 298107), (181, 120231), (183, 118917), (219, 99369), (543, 40077), (549, 39639), (657, 33123), (1629, 13359), (1647, 13213), (1971, 11041), (4453, 4887)]