21457568

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1297}}^1$

素因数の和:1365

約数の個数: 48

約数和(自身を含む): 47101824

約数和(自身を除く): 25644256

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 47, 88, 94, 176, 188, 352, 376, 517, 752, 1034, 1297, 1504, 2068, 2594, 4136, 5188, 8272, 10376, 14267, 16544, 20752, 28534, 41504, 57068, 60959, 114136, 121918, 228272, 243836, 456544, 487672, 670549, 975344, 1341098, 1950688, 2682196, 5364392, 10728784, 21457568]

約数ペア:

[(1, 21457568), (2, 10728784), (4, 5364392), (8, 2682196), (11, 1950688), (16, 1341098), (22, 975344), (32, 670549), (44, 487672), (47, 456544), (88, 243836), (94, 228272), (176, 121918), (188, 114136), (352, 60959), (376, 57068), (517, 41504), (752, 28534), (1034, 20752), (1297, 16544), (1504, 14267), (2068, 10376), (2594, 8272), (4136, 5188)]