209212255

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{293}}^1\times {\mathrm{887}}^1$

素因数の和:1215

約数の個数: 32

約数和(自身を含む): 300754944

約数和(自身を除く): 91542689

約数列:

[1, 5, 7, 23, 35, 115, 161, 293, 805, 887, 1465, 2051, 4435, 6209, 6739, 10255, 20401, 31045, 33695, 47173, 102005, 142807, 235865, 259891, 714035, 1299455, 1819237, 5977493, 9096185, 29887465, 41842451, 209212255]

約数ペア:

[(1, 209212255), (5, 41842451), (7, 29887465), (23, 9096185), (35, 5977493), (115, 1819237), (161, 1299455), (293, 714035), (805, 259891), (887, 235865), (1465, 142807), (2051, 102005), (4435, 47173), (6209, 33695), (6739, 31045), (10255, 20401)]