31120040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{111143}}^1$

素因数の和:111161

約数の個数: 32

約数和(自身を含む): 80023680

約数和(自身を除く): 48903640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 111143, 222286, 444572, 555715, 778001, 889144, 1111430, 1556002, 2222860, 3112004, 3890005, 4445720, 6224008, 7780010, 15560020, 31120040]

約数ペア:

[(1, 31120040), (2, 15560020), (4, 7780010), (5, 6224008), (7, 4445720), (8, 3890005), (10, 3112004), (14, 2222860), (20, 1556002), (28, 1111430), (35, 889144), (40, 778001), (56, 555715), (70, 444572), (140, 222286), (280, 111143)]