257629540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{6997}}^1$

素因数の和:7276

約数の個数: 48

約数和(自身を含む): 620750592

約数和(自身を除く): 363121052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 263, 526, 1052, 1315, 1841, 2630, 3682, 5260, 6997, 7364, 9205, 13994, 18410, 27988, 34985, 36820, 48979, 69970, 97958, 139940, 195916, 244895, 489790, 979580, 1840211, 3680422, 7360844, 9201055, 12881477, 18402110, 25762954, 36804220, 51525908, 64407385, 128814770, 257629540]

約数ペア:

[(1, 257629540), (2, 128814770), (4, 64407385), (5, 51525908), (7, 36804220), (10, 25762954), (14, 18402110), (20, 12881477), (28, 9201055), (35, 7360844), (70, 3680422), (140, 1840211), (263, 979580), (526, 489790), (1052, 244895), (1315, 195916), (1841, 139940), (2630, 97958), (3682, 69970), (5260, 48979), (6997, 36820), (7364, 34985), (9205, 27988), (13994, 18410)]