21643620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8389}}^1$

素因数の和:8444

約数の個数: 48

約数和(自身を含む): 62018880

約数和(自身を除く): 40375260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8389, 16778, 25167, 33556, 41945, 50334, 83890, 100668, 125835, 167780, 251670, 360727, 503340, 721454, 1082181, 1442908, 1803635, 2164362, 3607270, 4328724, 5410905, 7214540, 10821810, 21643620]

約数ペア:

[(1, 21643620), (2, 10821810), (3, 7214540), (4, 5410905), (5, 4328724), (6, 3607270), (10, 2164362), (12, 1803635), (15, 1442908), (20, 1082181), (30, 721454), (43, 503340), (60, 360727), (86, 251670), (129, 167780), (172, 125835), (215, 100668), (258, 83890), (430, 50334), (516, 41945), (645, 33556), (860, 25167), (1290, 16778), (2580, 8389)]