21077925

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{881}}^1$

素因数の和:934

約数の個数: 48

約数和(自身を含む): 39372480

約数和(自身を除く): 18294555

約数列:

[1, 3, 5, 11, 15, 25, 29, 33, 55, 75, 87, 145, 165, 275, 319, 435, 725, 825, 881, 957, 1595, 2175, 2643, 4405, 4785, 7975, 9691, 13215, 22025, 23925, 25549, 29073, 48455, 66075, 76647, 127745, 145365, 242275, 281039, 383235, 638725, 726825, 843117, 1405195, 1916175, 4215585, 7025975, 21077925]

約数ペア:

[(1, 21077925), (3, 7025975), (5, 4215585), (11, 1916175), (15, 1405195), (25, 843117), (29, 726825), (33, 638725), (55, 383235), (75, 281039), (87, 242275), (145, 145365), (165, 127745), (275, 76647), (319, 66075), (435, 48455), (725, 29073), (825, 25549), (881, 23925), (957, 22025), (1595, 13215), (2175, 9691), (2643, 7975), (4405, 4785)]