81115870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{353}}^1\times {\mathrm{2089}}^1$

素因数の和:2460

約数の個数: 32

約数和(自身を含む): 159809760

約数和(自身を除く): 78693890

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 353, 706, 1765, 2089, 3530, 3883, 4178, 7766, 10445, 19415, 20890, 22979, 38830, 45958, 114895, 229790, 737417, 1474834, 3687085, 7374170, 8111587, 16223174, 40557935, 81115870]

約数ペア:

[(1, 81115870), (2, 40557935), (5, 16223174), (10, 8111587), (11, 7374170), (22, 3687085), (55, 1474834), (110, 737417), (353, 229790), (706, 114895), (1765, 45958), (2089, 38830), (3530, 22979), (3883, 20890), (4178, 19415), (7766, 10445)]