20542545

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{8951}}^1$

素因数の和:8982

約数の個数: 32

約数和(自身を含む): 38672640

約数和(自身を除く): 18130095

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 8951, 26853, 44755, 80559, 134265, 152167, 241677, 402795, 456501, 760835, 1208385, 1369503, 2282505, 4108509, 6847515, 20542545]

約数ペア:

[(1, 20542545), (3, 6847515), (5, 4108509), (9, 2282505), (15, 1369503), (17, 1208385), (27, 760835), (45, 456501), (51, 402795), (85, 241677), (135, 152167), (153, 134265), (255, 80559), (459, 44755), (765, 26853), (2295, 8951)]