31780280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113501}}^1$

素因数の和:113519

約数の個数: 32

約数和(自身を含む): 81721440

約数和(自身を除く): 49941160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 113501, 227002, 454004, 567505, 794507, 908008, 1135010, 1589014, 2270020, 3178028, 3972535, 4540040, 6356056, 7945070, 15890140, 31780280]

約数ペア:

[(1, 31780280), (2, 15890140), (4, 7945070), (5, 6356056), (7, 4540040), (8, 3972535), (10, 3178028), (14, 2270020), (20, 1589014), (28, 1135010), (35, 908008), (40, 794507), (56, 567505), (70, 454004), (140, 227002), (280, 113501)]