640304218

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{21089}}^1$

素因数の和:21174

約数の個数: 32

約数和(自身を含む): 1093305600

約数和(自身を除く): 453001382

約数列:

[1, 2, 17, 19, 34, 38, 47, 94, 323, 646, 799, 893, 1598, 1786, 15181, 21089, 30362, 42178, 358513, 400691, 717026, 801382, 991183, 1982366, 6811747, 13623494, 16850111, 18832477, 33700222, 37664954, 320152109, 640304218]

約数ペア:

[(1, 640304218), (2, 320152109), (17, 37664954), (19, 33700222), (34, 18832477), (38, 16850111), (47, 13623494), (94, 6811747), (323, 1982366), (646, 991183), (799, 801382), (893, 717026), (1598, 400691), (1786, 358513), (15181, 42178), (21089, 30362)]