28409260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{491}}^1$

素因数の和:774

約数の個数: 48

約数和(自身を含む): 65463552

約数和(自身を除く): 37054292

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 263, 491, 526, 982, 1052, 1315, 1964, 2455, 2630, 2893, 4910, 5260, 5401, 5786, 9820, 10802, 11572, 14465, 21604, 27005, 28930, 54010, 57860, 108020, 129133, 258266, 516532, 645665, 1291330, 1420463, 2582660, 2840926, 5681852, 7102315, 14204630, 28409260]

約数ペア:

[(1, 28409260), (2, 14204630), (4, 7102315), (5, 5681852), (10, 2840926), (11, 2582660), (20, 1420463), (22, 1291330), (44, 645665), (55, 516532), (110, 258266), (220, 129133), (263, 108020), (491, 57860), (526, 54010), (982, 28930), (1052, 27005), (1315, 21604), (1964, 14465), (2455, 11572), (2630, 10802), (2893, 9820), (4910, 5786), (5260, 5401)]