20337525

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:455

約数の個数: 72

約数和(自身を含む): 41637960

約数和(自身を除く): 21300435

約数列:

[1, 3, 5, 9, 13, 15, 17, 25, 39, 45, 51, 65, 75, 85, 117, 153, 195, 221, 225, 255, 325, 409, 425, 585, 663, 765, 975, 1105, 1227, 1275, 1989, 2045, 2925, 3315, 3681, 3825, 5317, 5525, 6135, 6953, 9945, 10225, 15951, 16575, 18405, 20859, 26585, 30675, 34765, 47853, 49725, 62577, 79755, 90389, 92025, 104295, 132925, 173825, 239265, 271167, 312885, 398775, 451945, 521475, 813501, 1196325, 1355835, 1564425, 2259725, 4067505, 6779175, 20337525]

約数ペア:

[(1, 20337525), (3, 6779175), (5, 4067505), (9, 2259725), (13, 1564425), (15, 1355835), (17, 1196325), (25, 813501), (39, 521475), (45, 451945), (51, 398775), (65, 312885), (75, 271167), (85, 239265), (117, 173825), (153, 132925), (195, 104295), (221, 92025), (225, 90389), (255, 79755), (325, 62577), (409, 49725), (425, 47853), (585, 34765), (663, 30675), (765, 26585), (975, 20859), (1105, 18405), (1227, 16575), (1275, 15951), (1989, 10225), (2045, 9945), (2925, 6953), (3315, 6135), (3681, 5525), (3825, 5317)]