21638460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8387}}^1$

素因数の和:8442

約数の個数: 48

約数和(自身を含む): 62004096

約数和(自身を除く): 40365636

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, 8387, 16774, 25161, 33548, 41935, 50322, 83870, 100644, 125805, 167740, 251610, 360641, 503220, 721282, 1081923, 1442564, 1803205, 2163846, 3606410, 4327692, 5409615, 7212820, 10819230, 21638460]

約数ペア:

[(1, 21638460), (2, 10819230), (3, 7212820), (4, 5409615), (5, 4327692), (6, 3606410), (10, 2163846), (12, 1803205), (15, 1442564), (20, 1081923), (30, 721282), (43, 503220), (60, 360641), (86, 251610), (129, 167740), (172, 125805), (215, 100644), (258, 83870), (430, 50322), (516, 41935), (645, 33548), (860, 25161), (1290, 16774), (2580, 8387)]