20646585

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 38362896

約数和(自身を除く): 17716311

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 137, 153, 197, 255, 411, 591, 685, 765, 985, 1233, 1773, 2055, 2329, 2955, 3349, 6165, 6987, 8865, 10047, 11645, 16745, 20961, 26989, 30141, 34935, 50235, 80967, 104805, 134945, 150705, 242901, 404835, 458813, 1214505, 1376439, 2294065, 4129317, 6882195, 20646585]

約数ペア:

[(1, 20646585), (3, 6882195), (5, 4129317), (9, 2294065), (15, 1376439), (17, 1214505), (45, 458813), (51, 404835), (85, 242901), (137, 150705), (153, 134945), (197, 104805), (255, 80967), (411, 50235), (591, 34935), (685, 30141), (765, 26989), (985, 20961), (1233, 16745), (1773, 11645), (2055, 10047), (2329, 8865), (2955, 6987), (3349, 6165)]