28748889

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 47720400

約数和(自身を除く): 18971511

約数列:

[1, 3, 9, 13, 29, 37, 39, 87, 111, 117, 229, 261, 333, 377, 481, 687, 1073, 1131, 1443, 2061, 2977, 3219, 3393, 4329, 6641, 8473, 8931, 9657, 13949, 19923, 25419, 26793, 41847, 59769, 76257, 86333, 110149, 125541, 245717, 258999, 330447, 737151, 776997, 991341, 2211453, 3194321, 9582963, 28748889]

約数ペア:

[(1, 28748889), (3, 9582963), (9, 3194321), (13, 2211453), (29, 991341), (37, 776997), (39, 737151), (87, 330447), (111, 258999), (117, 245717), (229, 125541), (261, 110149), (333, 86333), (377, 76257), (481, 59769), (687, 41847), (1073, 26793), (1131, 25419), (1443, 19923), (2061, 13949), (2977, 9657), (3219, 8931), (3393, 8473), (4329, 6641)]