21452319

素因数分解:

$3^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{2039}}^1$

素因数の和:2219

約数の個数: 24

約数和(自身を含む): 35642880

約数和(自身を除く): 14190561

約数列:

[1, 3, 7, 9, 21, 63, 167, 501, 1169, 1503, 2039, 3507, 6117, 10521, 14273, 18351, 42819, 128457, 340513, 1021539, 2383591, 3064617, 7150773, 21452319]

約数ペア:

[(1, 21452319), (3, 7150773), (7, 3064617), (9, 2383591), (21, 1021539), (63, 340513), (167, 128457), (501, 42819), (1169, 18351), (1503, 14273), (2039, 10521), (3507, 6117)]