18747957

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 27675648

約数和(自身を除く): 8927691

約数列:

[1, 3, 17, 43, 51, 83, 103, 129, 249, 309, 731, 1411, 1751, 2193, 3569, 4233, 4429, 5253, 8549, 10707, 13287, 25647, 60673, 75293, 145333, 182019, 225879, 367607, 435999, 1102821, 6249319, 18747957]

約数ペア:

[(1, 18747957), (3, 6249319), (17, 1102821), (43, 435999), (51, 367607), (83, 225879), (103, 182019), (129, 145333), (249, 75293), (309, 60673), (731, 25647), (1411, 13287), (1751, 10707), (2193, 8549), (3569, 5253), (4233, 4429)]