21091312

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{409}}^1$

素因数の和:721

約数の個数: 40

約数和(自身を含む): 44840880

約数和(自身を除く): 23749568

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 293, 409, 586, 818, 1172, 1636, 2344, 3223, 3272, 4499, 4688, 6446, 6544, 8998, 12892, 17996, 25784, 35992, 51568, 71984, 119837, 239674, 479348, 958696, 1318207, 1917392, 2636414, 5272828, 10545656, 21091312]

約数ペア:

[(1, 21091312), (2, 10545656), (4, 5272828), (8, 2636414), (11, 1917392), (16, 1318207), (22, 958696), (44, 479348), (88, 239674), (176, 119837), (293, 71984), (409, 51568), (586, 35992), (818, 25784), (1172, 17996), (1636, 12892), (2344, 8998), (3223, 6544), (3272, 6446), (4499, 4688)]