18917338

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:390

約数の個数: 32

約数和(自身を含む): 32400000

約数和(自身を除く): 13482662

約数列:

[1, 2, 11, 22, 29, 58, 149, 199, 298, 319, 398, 638, 1639, 2189, 3278, 4321, 4378, 5771, 8642, 11542, 29651, 47531, 59302, 63481, 95062, 126962, 326161, 652322, 859879, 1719758, 9458669, 18917338]

約数ペア:

[(1, 18917338), (2, 9458669), (11, 1719758), (22, 859879), (29, 652322), (58, 326161), (149, 126962), (199, 95062), (298, 63481), (319, 59302), (398, 47531), (638, 29651), (1639, 11542), (2189, 8642), (3278, 5771), (4321, 4378)]