21280136

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1619}}^1$

素因数の和:1709

約数の個数: 32

約数和(自身を含む): 41990400

約数和(自身を除く): 20710264

約数列:

[1, 2, 4, 8, 31, 53, 62, 106, 124, 212, 248, 424, 1619, 1643, 3238, 3286, 6476, 6572, 12952, 13144, 50189, 85807, 100378, 171614, 200756, 343228, 401512, 686456, 2660017, 5320034, 10640068, 21280136]

約数ペア:

[(1, 21280136), (2, 10640068), (4, 5320034), (8, 2660017), (31, 686456), (53, 401512), (62, 343228), (106, 200756), (124, 171614), (212, 100378), (248, 85807), (424, 50189), (1619, 13144), (1643, 12952), (3238, 6572), (3286, 6476)]