18940431

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 28435968

約数和(自身を除く): 9495537

約数列:

[1, 3, 17, 23, 51, 67, 69, 201, 241, 391, 723, 1139, 1173, 1541, 3417, 4097, 4623, 5543, 12291, 16147, 16629, 26197, 48441, 78591, 94231, 274499, 282693, 371381, 823497, 1114143, 6313477, 18940431]

約数ペア:

[(1, 18940431), (3, 6313477), (17, 1114143), (23, 823497), (51, 371381), (67, 282693), (69, 274499), (201, 94231), (241, 78591), (391, 48441), (723, 26197), (1139, 16629), (1173, 16147), (1541, 12291), (3417, 5543), (4097, 4623)]