21736336

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1$

素因数の和:691

約数の個数: 40

約数和(自身を含む): 44963640

約数和(自身を除く): 23227304

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 157, 272, 314, 509, 628, 1018, 1256, 2036, 2512, 2669, 4072, 5338, 8144, 8653, 10676, 17306, 21352, 34612, 42704, 69224, 79913, 138448, 159826, 319652, 639304, 1278608, 1358521, 2717042, 5434084, 10868168, 21736336]

約数ペア:

[(1, 21736336), (2, 10868168), (4, 5434084), (8, 2717042), (16, 1358521), (17, 1278608), (34, 639304), (68, 319652), (136, 159826), (157, 138448), (272, 79913), (314, 69224), (509, 42704), (628, 34612), (1018, 21352), (1256, 17306), (2036, 10676), (2512, 8653), (2669, 8144), (4072, 5338)]