19980422

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5641}}^1$

素因数の和:5684

約数の個数: 32

約数和(自身を含む): 38997504

約数和(自身を除く): 19017082

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 77, 154, 161, 253, 322, 506, 1771, 3542, 5641, 11282, 39487, 62051, 78974, 124102, 129743, 259486, 434357, 868714, 908201, 1427173, 1816402, 2854346, 9990211, 19980422]

約数ペア:

[(1, 19980422), (2, 9990211), (7, 2854346), (11, 1816402), (14, 1427173), (22, 908201), (23, 868714), (46, 434357), (77, 259486), (154, 129743), (161, 124102), (253, 78974), (322, 62051), (506, 39487), (1771, 11282), (3542, 5641)]