20781720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{57727}}^1$

素因数の和:57744

約数の個数: 48

約数和(自身を含む): 67541760

約数和(自身を除く): 46760040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 57727, 115454, 173181, 230908, 288635, 346362, 461816, 519543, 577270, 692724, 865905, 1039086, 1154540, 1385448, 1731810, 2078172, 2309080, 2597715, 3463620, 4156344, 5195430, 6927240, 10390860, 20781720]

約数ペア:

[(1, 20781720), (2, 10390860), (3, 6927240), (4, 5195430), (5, 4156344), (6, 3463620), (8, 2597715), (9, 2309080), (10, 2078172), (12, 1731810), (15, 1385448), (18, 1154540), (20, 1039086), (24, 865905), (30, 692724), (36, 577270), (40, 519543), (45, 461816), (60, 346362), (72, 288635), (90, 230908), (120, 173181), (180, 115454), (360, 57727)]