21059038

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 43319808

約数和(自身を除く): 22260770

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 67, 77, 91, 134, 143, 154, 157, 182, 286, 314, 469, 737, 871, 938, 1001, 1099, 1474, 1727, 1742, 2002, 2041, 2198, 3454, 4082, 5159, 6097, 9581, 10318, 10519, 12089, 12194, 14287, 19162, 21038, 22451, 24178, 28574, 44902, 67067, 73633, 115709, 134134, 136747, 147266, 157157, 231418, 273494, 314314, 809963, 957229, 1504217, 1619926, 1914458, 3008434, 10529519, 21059038]

約数ペア:

[(1, 21059038), (2, 10529519), (7, 3008434), (11, 1914458), (13, 1619926), (14, 1504217), (22, 957229), (26, 809963), (67, 314314), (77, 273494), (91, 231418), (134, 157157), (143, 147266), (154, 136747), (157, 134134), (182, 115709), (286, 73633), (314, 67067), (469, 44902), (737, 28574), (871, 24178), (938, 22451), (1001, 21038), (1099, 19162), (1474, 14287), (1727, 12194), (1742, 12089), (2002, 10519), (2041, 10318), (2198, 9581), (3454, 6097), (4082, 5159)]