28922660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 67636800

約数和(自身を除く): 38714140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 199, 215, 260, 338, 398, 430, 559, 676, 796, 845, 860, 995, 1118, 1690, 1990, 2236, 2587, 2795, 3380, 3980, 5174, 5590, 7267, 8557, 10348, 11180, 12935, 14534, 17114, 25870, 29068, 33631, 34228, 36335, 42785, 51740, 67262, 72670, 85570, 111241, 134524, 145340, 168155, 171140, 222482, 336310, 444964, 556205, 672620, 1112410, 1446133, 2224820, 2892266, 5784532, 7230665, 14461330, 28922660]

約数ペア:

[(1, 28922660), (2, 14461330), (4, 7230665), (5, 5784532), (10, 2892266), (13, 2224820), (20, 1446133), (26, 1112410), (43, 672620), (52, 556205), (65, 444964), (86, 336310), (130, 222482), (169, 171140), (172, 168155), (199, 145340), (215, 134524), (260, 111241), (338, 85570), (398, 72670), (430, 67262), (559, 51740), (676, 42785), (796, 36335), (845, 34228), (860, 33631), (995, 29068), (1118, 25870), (1690, 17114), (1990, 14534), (2236, 12935), (2587, 11180), (2795, 10348), (3380, 8557), (3980, 7267), (5174, 5590)]