20980638

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2281}}^1$

素因数の和:2369

約数の個数: 48

約数和(自身を含む): 52686816

約数和(自身を除く): 31706178

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 73, 126, 146, 219, 438, 511, 657, 1022, 1314, 1533, 2281, 3066, 4562, 4599, 6843, 9198, 13686, 15967, 20529, 31934, 41058, 47901, 95802, 143703, 166513, 287406, 333026, 499539, 999078, 1165591, 1498617, 2331182, 2997234, 3496773, 6993546, 10490319, 20980638]

約数ペア:

[(1, 20980638), (2, 10490319), (3, 6993546), (6, 3496773), (7, 2997234), (9, 2331182), (14, 1498617), (18, 1165591), (21, 999078), (42, 499539), (63, 333026), (73, 287406), (126, 166513), (146, 143703), (219, 95802), (438, 47901), (511, 41058), (657, 31934), (1022, 20529), (1314, 15967), (1533, 13686), (2281, 9198), (3066, 6843), (4562, 4599)]