290805215

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{311}}^1$

素因数の和:559

約数の個数: 32

約数和(自身を含む): 375238656

約数和(自身を除く): 84433441

約数列:

[1, 5, 23, 47, 115, 173, 235, 311, 865, 1081, 1555, 3979, 5405, 7153, 8131, 14617, 19895, 35765, 40655, 53803, 73085, 187013, 269015, 336191, 935065, 1237469, 1680955, 2528741, 6187345, 12643705, 58161043, 290805215]

約数ペア:

[(1, 290805215), (5, 58161043), (23, 12643705), (47, 6187345), (115, 2528741), (173, 1680955), (235, 1237469), (311, 935065), (865, 336191), (1081, 269015), (1555, 187013), (3979, 73085), (5405, 53803), (7153, 40655), (8131, 35765), (14617, 19895)]