21151531

素因数分解:

${\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:342

約数の個数: 16

約数和(自身を含む): 22675968

約数和(自身を除く): 1524437

約数列:

[1, 37, 41, 73, 191, 1517, 2701, 2993, 7067, 7831, 13943, 110741, 289747, 515891, 571663, 21151531]

約数ペア:

[(1, 21151531), (37, 571663), (41, 515891), (73, 289747), (191, 110741), (1517, 13943), (2701, 7831), (2993, 7067)]