17687187

素因数分解:

$3^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{461}}^1$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 31600800

約数和(自身を除く): 13913613

約数列:

[1, 3, 7, 9, 21, 27, 29, 49, 63, 87, 147, 189, 203, 261, 441, 461, 609, 783, 1323, 1383, 1421, 1827, 3227, 4149, 4263, 5481, 9681, 12447, 12789, 13369, 22589, 29043, 38367, 40107, 67767, 87129, 93583, 120321, 203301, 280749, 360963, 609903, 655081, 842247, 1965243, 2526741, 5895729, 17687187]

約数ペア:

[(1, 17687187), (3, 5895729), (7, 2526741), (9, 1965243), (21, 842247), (27, 655081), (29, 609903), (49, 360963), (63, 280749), (87, 203301), (147, 120321), (189, 93583), (203, 87129), (261, 67767), (441, 40107), (461, 38367), (609, 29043), (783, 22589), (1323, 13369), (1383, 12789), (1421, 12447), (1827, 9681), (3227, 5481), (4149, 4263)]