17972591

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 23912448

約数和(自身を除く): 5939857

約数列:

[1, 7, 13, 23, 31, 91, 161, 217, 277, 299, 403, 713, 1939, 2093, 2821, 3601, 4991, 6371, 8587, 9269, 25207, 44597, 60109, 64883, 82823, 111631, 197501, 579761, 781417, 1382507, 2567513, 17972591]

約数ペア:

[(1, 17972591), (7, 2567513), (13, 1382507), (23, 781417), (31, 579761), (91, 197501), (161, 111631), (217, 82823), (277, 64883), (299, 60109), (403, 44597), (713, 25207), (1939, 9269), (2093, 8587), (2821, 6371), (3601, 4991)]