21992900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{761}}^1$

素因数の和:809

約数の個数: 54

約数和(自身を含む): 50763678

約数和(自身を除く): 28770778

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 289, 340, 425, 578, 761, 850, 1156, 1445, 1522, 1700, 2890, 3044, 3805, 5780, 7225, 7610, 12937, 14450, 15220, 19025, 25874, 28900, 38050, 51748, 64685, 76100, 129370, 219929, 258740, 323425, 439858, 646850, 879716, 1099645, 1293700, 2199290, 4398580, 5498225, 10996450, 21992900]

約数ペア:

[(1, 21992900), (2, 10996450), (4, 5498225), (5, 4398580), (10, 2199290), (17, 1293700), (20, 1099645), (25, 879716), (34, 646850), (50, 439858), (68, 323425), (85, 258740), (100, 219929), (170, 129370), (289, 76100), (340, 64685), (425, 51748), (578, 38050), (761, 28900), (850, 25874), (1156, 19025), (1445, 15220), (1522, 14450), (1700, 12937), (2890, 7610), (3044, 7225), (3805, 5780)]