178780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1277}}^1$

素因数の和:1293

約数の個数: 24

約数和(自身を含む): 429408

約数和(自身を除く): 250628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1277, 2554, 5108, 6385, 8939, 12770, 17878, 25540, 35756, 44695, 89390, 178780]

約数ペア:

[(1, 178780), (2, 89390), (4, 44695), (5, 35756), (7, 25540), (10, 17878), (14, 12770), (20, 8939), (28, 6385), (35, 5108), (70, 2554), (140, 1277)]