9721240

素因数分解:

$2^3\times 5^1\times {\mathrm{243031}}^1$

素因数の和:243042

約数の個数: 16

約数和(自身を含む): 21872880

約数和(自身を除く): 12151640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 243031, 486062, 972124, 1215155, 1944248, 2430310, 4860620, 9721240]

約数ペア:

[(1, 9721240), (2, 4860620), (4, 2430310), (5, 1944248), (8, 1215155), (10, 972124), (20, 486062), (40, 243031)]