28570060

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 62092800

約数和(自身を除く): 33522740

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 139, 172, 215, 239, 278, 430, 478, 556, 695, 860, 956, 1195, 1390, 2390, 2780, 4780, 5977, 10277, 11954, 20554, 23908, 29885, 33221, 41108, 51385, 59770, 66442, 102770, 119540, 132884, 166105, 205540, 332210, 664420, 1428503, 2857006, 5714012, 7142515, 14285030, 28570060]

約数ペア:

[(1, 28570060), (2, 14285030), (4, 7142515), (5, 5714012), (10, 2857006), (20, 1428503), (43, 664420), (86, 332210), (139, 205540), (172, 166105), (215, 132884), (239, 119540), (278, 102770), (430, 66442), (478, 59770), (556, 51385), (695, 41108), (860, 33221), (956, 29885), (1195, 23908), (1390, 20554), (2390, 11954), (2780, 10277), (4780, 5977)]