21160648

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155593}}^1$

素因数の和:155616

約数の個数: 16

約数和(自身を含む): 42010380

約数和(自身を除く): 20849732

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155593, 311186, 622372, 1244744, 2645081, 5290162, 10580324, 21160648]

約数ペア:

[(1, 21160648), (2, 10580324), (4, 5290162), (8, 2645081), (17, 1244744), (34, 622372), (68, 311186), (136, 155593)]