80894020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{1103}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 179907840

約数和(自身を除く): 99013820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 193, 380, 386, 772, 965, 1103, 1930, 2206, 3667, 3860, 4412, 5515, 7334, 11030, 14668, 18335, 20957, 22060, 36670, 41914, 73340, 83828, 104785, 209570, 212879, 419140, 425758, 851516, 1064395, 2128790, 4044701, 4257580, 8089402, 16178804, 20223505, 40447010, 80894020]

約数ペア:

[(1, 80894020), (2, 40447010), (4, 20223505), (5, 16178804), (10, 8089402), (19, 4257580), (20, 4044701), (38, 2128790), (76, 1064395), (95, 851516), (190, 425758), (193, 419140), (380, 212879), (386, 209570), (772, 104785), (965, 83828), (1103, 73340), (1930, 41914), (2206, 36670), (3667, 22060), (3860, 20957), (4412, 18335), (5515, 14668), (7334, 11030)]