18990196

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{249871}}^1$

素因数の和:249894

約数の個数: 12

約数和(自身を含む): 34982080

約数和(自身を除く): 15991884

約数列:

[1, 2, 4, 19, 38, 76, 249871, 499742, 999484, 4747549, 9495098, 18990196]

約数ペア:

[(1, 18990196), (2, 9495098), (4, 4747549), (19, 999484), (38, 499742), (76, 249871)]