28487820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{967}}^1$

素因数の和:1470

約数の個数: 48

約数和(自身を含む): 80011008

約数和(自身を除く): 51523188

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 491, 967, 982, 1473, 1934, 1964, 2455, 2901, 2946, 3868, 4835, 4910, 5802, 5892, 7365, 9670, 9820, 11604, 14505, 14730, 19340, 29010, 29460, 58020, 474797, 949594, 1424391, 1899188, 2373985, 2848782, 4747970, 5697564, 7121955, 9495940, 14243910, 28487820]

約数ペア:

[(1, 28487820), (2, 14243910), (3, 9495940), (4, 7121955), (5, 5697564), (6, 4747970), (10, 2848782), (12, 2373985), (15, 1899188), (20, 1424391), (30, 949594), (60, 474797), (491, 58020), (967, 29460), (982, 29010), (1473, 19340), (1934, 14730), (1964, 14505), (2455, 11604), (2901, 9820), (2946, 9670), (3868, 7365), (4835, 5892), (4910, 5802)]