18916388

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1549}}^1$

素因数の和:1667

約数の個数: 24

約数和(自身を含む): 34372800

約数和(自身を除く): 15456412

約数列:

[1, 2, 4, 43, 71, 86, 142, 172, 284, 1549, 3053, 3098, 6106, 6196, 12212, 66607, 109979, 133214, 219958, 266428, 439916, 4729097, 9458194, 18916388]

約数ペア:

[(1, 18916388), (2, 9458194), (4, 4729097), (43, 439916), (71, 266428), (86, 219958), (142, 133214), (172, 109979), (284, 66607), (1549, 12212), (3053, 6196), (3098, 6106)]