490000004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:489

約数の個数: 72

約数和(自身を含む): 988498560

約数和(自身を除く): 498498556

約数列:

[1, 2, 4, 13, 23, 26, 46, 47, 52, 92, 94, 188, 299, 379, 529, 598, 611, 758, 1058, 1081, 1196, 1222, 1516, 2116, 2162, 2444, 4324, 4927, 6877, 8717, 9854, 13754, 14053, 17434, 17813, 19708, 24863, 27508, 28106, 34868, 35626, 49726, 56212, 71252, 99452, 113321, 200491, 226642, 231569, 323219, 400982, 409699, 453284, 463138, 646438, 801964, 819398, 926276, 1292876, 1638796, 2606383, 5212766, 5326087, 9423077, 10425532, 10652174, 18846154, 21304348, 37692308, 122500001, 245000002, 490000004]

約数ペア:

[(1, 490000004), (2, 245000002), (4, 122500001), (13, 37692308), (23, 21304348), (26, 18846154), (46, 10652174), (47, 10425532), (52, 9423077), (92, 5326087), (94, 5212766), (188, 2606383), (299, 1638796), (379, 1292876), (529, 926276), (598, 819398), (611, 801964), (758, 646438), (1058, 463138), (1081, 453284), (1196, 409699), (1222, 400982), (1516, 323219), (2116, 231569), (2162, 226642), (2444, 200491), (4324, 113321), (4927, 99452), (6877, 71252), (8717, 56212), (9854, 49726), (13754, 35626), (14053, 34868), (17434, 28106), (17813, 27508), (19708, 24863)]