19665219

素因数分解:

$3^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{659}}^1$

素因数の和:712

約数の個数: 32

約数和(自身を含む): 31680000

約数和(自身を除く): 12014781

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 343, 609, 659, 1029, 1421, 1977, 4263, 4613, 9947, 13839, 19111, 29841, 32291, 57333, 96873, 133777, 226037, 401331, 678111, 936439, 2809317, 6555073, 19665219]

約数ペア:

[(1, 19665219), (3, 6555073), (7, 2809317), (21, 936439), (29, 678111), (49, 401331), (87, 226037), (147, 133777), (203, 96873), (343, 57333), (609, 32291), (659, 29841), (1029, 19111), (1421, 13839), (1977, 9947), (4263, 4613)]