21973640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{42257}}^1$

素因数の和:42281

約数の個数: 32

約数和(自身を含む): 53245080

約数和(自身を除く): 31271440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 42257, 84514, 169028, 211285, 338056, 422570, 549341, 845140, 1098682, 1690280, 2197364, 2746705, 4394728, 5493410, 10986820, 21973640]

約数ペア:

[(1, 21973640), (2, 10986820), (4, 5493410), (5, 4394728), (8, 2746705), (10, 2197364), (13, 1690280), (20, 1098682), (26, 845140), (40, 549341), (52, 422570), (65, 338056), (104, 211285), (130, 169028), (260, 84514), (520, 42257)]