21528664

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{509}}^1$

素因数の和:843

約数の個数: 32

約数和(自身を含む): 42962400

約数和(自身を除く): 21433736

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 311, 509, 622, 1018, 1244, 2036, 2488, 4072, 5287, 8653, 10574, 17306, 21148, 34612, 42296, 69224, 158299, 316598, 633196, 1266392, 2691083, 5382166, 10764332, 21528664]

約数ペア:

[(1, 21528664), (2, 10764332), (4, 5382166), (8, 2691083), (17, 1266392), (34, 633196), (68, 316598), (136, 158299), (311, 69224), (509, 42296), (622, 34612), (1018, 21148), (1244, 17306), (2036, 10574), (2488, 8653), (4072, 5287)]