21118576

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{547}}^1$

素因数の和:701

約数の個数: 40

約数和(自身を含む): 43489280

約数和(自身を除く): 22370704

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 127, 152, 254, 304, 508, 547, 1016, 1094, 2032, 2188, 2413, 4376, 4826, 8752, 9652, 10393, 19304, 20786, 38608, 41572, 69469, 83144, 138938, 166288, 277876, 555752, 1111504, 1319911, 2639822, 5279644, 10559288, 21118576]

約数ペア:

[(1, 21118576), (2, 10559288), (4, 5279644), (8, 2639822), (16, 1319911), (19, 1111504), (38, 555752), (76, 277876), (127, 166288), (152, 138938), (254, 83144), (304, 69469), (508, 41572), (547, 38608), (1016, 20786), (1094, 19304), (2032, 10393), (2188, 9652), (2413, 8752), (4376, 4826)]