163972081

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{19801}}^1$

素因数の和:19841

約数の個数: 18

約数和(自身を含む): 206554662

約数和(自身を除く): 42582581

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 8281, 19801, 138607, 257413, 970249, 1801891, 3346369, 12613237, 23424583, 163972081]

約数ペア:

[(1, 163972081), (7, 23424583), (13, 12613237), (49, 3346369), (91, 1801891), (169, 970249), (637, 257413), (1183, 138607), (8281, 19801)]