258464703

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{1999}}^1$

素因数の和:2187

約数の個数: 32

約数和(自身を含む): 405504000

約数和(自身を除く): 147039297

約数列:

[1, 3, 7, 21, 47, 131, 141, 329, 393, 917, 987, 1999, 2751, 5997, 6157, 13993, 18471, 41979, 43099, 93953, 129297, 261869, 281859, 657671, 785607, 1833083, 1973013, 5499249, 12307843, 36923529, 86154901, 258464703]

約数ペア:

[(1, 258464703), (3, 86154901), (7, 36923529), (21, 12307843), (47, 5499249), (131, 1973013), (141, 1833083), (329, 785607), (393, 657671), (917, 281859), (987, 261869), (1999, 129297), (2751, 93953), (5997, 43099), (6157, 41979), (13993, 18471)]