647907988

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{254281}}^1$

素因数の和:254312

約数の個数: 36

約数和(自身を含む): 1420419252

約数和(自身を除く): 772511264

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 254281, 508562, 1017124, 1779967, 3305653, 3559934, 6611306, 7119868, 12459769, 13222612, 23139571, 24919538, 46279142, 49839076, 92558284, 161976997, 323953994, 647907988]

約数ペア:

[(1, 647907988), (2, 323953994), (4, 161976997), (7, 92558284), (13, 49839076), (14, 46279142), (26, 24919538), (28, 23139571), (49, 13222612), (52, 12459769), (91, 7119868), (98, 6611306), (182, 3559934), (196, 3305653), (364, 1779967), (637, 1017124), (1274, 508562), (2548, 254281)]